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Full text of "Publications of the David Dunlap Observatory"

PUBLICATIONS OF 

THE DAVID DUNLAP OBSERVATORY 

UNIVERSITY OF TORONTO 

Volume II Number 2 



A SECOND CATALOGUE OF 

VARIABLE STARS IN GLOBULAR CLUSTERS 

COMPRISING 1,421 ENTRIES 



BY 



HELEN B. SAWYER 



UNIVERSITY OF TORONTO PRESS: 1955 



INTRODUCTION 

It is fifteen years since the first catalogue of variable stars in globular clusters 
was published at this observatory by the writer in Publications of the David 
Dunlap Observatory, vol. 1, no. 4, 1939. The numerous requests we have 
received for this catalogue are evidence that it has proved useful to many 
workers. 

The references to all globular cluster literature were brought up to date in 
1947 by the complete listing in the Bibliography of Individual Globular Clusters 
(David Dunlap Observatory Publications, vol. 1, no. 20), but among this great 
number of references the data on variables were not selectively tabulated. 
Sufficient information has now been added to variable star data to justify 
a second edition of the variable star catalogue. The present catalogue, in a 
form similar to that of the first, aims to include all variables which lie within 
the visible limits of a globular cluster, whether physical members of the 
cluster or not. When such variables are known, or presumed to be, field stars, 
this is noted. A few of the variables in this catalogue are also included in the 
General Catalogue of Variable Stars by Kukarkin and Parenago, and its sup- 
plements. 

Although it would be convenient to have prints of each cluster included in 
the present catalogue, the difficulty in accomplishing this is too great, and 
the reader must be referred to the original publications for these. The co- 
ordinates in x and y in seconds of arc are listed for practically every variable, 
but they do not provide, in many cases, as satisfactory identification as could 
be wished. It is not easy to select the exact centre of a cluster for the point of 
origin. In clusters where only one variable exists, the identification may be 
uncertain, and where large numbers have been found, different observers have 
not always used the same origin. 

Table I contains a list, with 1950 positions, of 34 globular clusters which are 
not included in the main table of this publication. These are clusters for which 
I have no knowledge of a published search for variables, though several of 
them are under investigation at the present time. For the most part they are 
either clusters in the far southern sky, or else difficult objects which can be 
properly attacked only by a telescope of at least 100 inches. Table I and 
Table II (the 72 globular clusters which have been searched for variables) 
together contain the complete list of globular clusters in our galactic system 
as known to me at the present time. The remarks following Table I explain 
the changes in the list of globular clusters made since 1947. 

35 



36 



Publications of the David Dunlap Observatory 

TABLE I 
Thirty-four Globular Clusters Not Searched for Variables 



NGC 


R.A. 


1950 


Dec. 1950 


NGC 


R.A 


1950 


Dec. 1950 


1261 


03 h 


10 m 


.9 


-55° 25' 


6388 


17 h 


32 m 


.6 


-44° 43' 


1841 


04 


52 


.5 


-84 05 


6401 


17 


35 


.6 


-23 53 


2158 


06 


04 


.3 


+24 06 


6440 


17 


45 


.9 


-20 21 


2682 


08 


48 


.5 


+ 12 00 


6441 


17 


46 


.8 


-37 02 


IC 4499 


14 


52 


.7 


-82 02 


6453 


17 


48 


.0 


-34 37 


5824 


15 


00 


.9 


-32 53 


6496 


17 


55 


.5 


-44 15 


5927 


15 


24 


.4 


-50 29 


6517 


17 


59 


.1 


-08 57 


5946 


15 


31 


.8 


-50 30 


6558 


18 


07 


.0 


-31 45 


6101 


16 


20 


.0 


-72 06 


IC 1276 


18 


07 


.5 


-07 15 


6139 


16 


24 


.3 


-38 44 


6569 


18 


10 


.4 


-31 50 


6304 


17 


11 


.4 


-29 24 


6624 


18 


20 


.5 


-30 23 


6316 


17 


13 


.4 


-28 05 


6637 


18 


28 


.1 


-32 23 


6325 


17 


15 


.0 


-23 42 


6638 


18 


27 


.9 


-25 32 


6342 


17 


18 


.2 


-19 32 


6642 


18 


28 


.4 


-23 30 


6352 


17 


21 


.6 


-48 26 


6652 


18 


32 


.5 


-33 02 


6355 


17 


20 


.9 


-26 19 


6681 


18 


40 


.0 


-32 21 


6380 


17 


31 


.0 


-39 03 


6717 


18 


52 


.1 


-22 47 



Remarks on Table I 
Additions to 1947 list 

NGC 2158 and 2682 (M67), formerly considered galactic clusters are listed as globular by 
Rosino and Becker respectively in the I.A.U. report of Commission 37, July 1954. 

NGC 6380 has very recently been shown to be globular by Thackeray with the Radcliffe 
74-inch; NGC 6558, on some early lists as globular (Helwan Bull., nos. 21, and 22, 1921) is 
confirmed as globular by Thackeray; correspondence, 1954. 

IC 1276, NGC 6642 and 6717 are considered globular by Baade and N. U. Mayall, corres- 
pondence, 1948. 

Three other clusters not listed as globular in 1947 are now included among those with 
variables known, in the body of the catalogue. These are the new cluster found by Baade at 
R.A. 15 h 13 m .5, and the clusters NGC 6235 and 6535 which vacillate between lists of globular 
and galactic clusters. 

Deletions from 1947 list 

The unnumbered object at R.A. 17 h 45 m .7, Dec. -60° 45', and NGC 6684 are now dropped 
from the globular cluster list. From a study of Harvard Southern Station plates, Shapley in a 
private communication states that they are not globular. 



Summary of Data on Variable Stars in Globular Clusters 
numbers of variables 

At present 1,421 variable stars are known in the 72 clusters for which 
there is a record of search. This does not include unpublished or suspected 
variables. There is a gratifying reduction in the number of variables listed as 
unpublished, from 99 in 1939 to 41 now. Furthermore in only four clusters 



Variable Stars in Globular Clusters 37 

are all known variables unpublished. Some of the unpublished variables 
probably correspond to variables now published by other observers. Counted 
as suspected variables, in addition to unpublished suspects, are those numbered 
variables whose variation has been questioned, making a total of 48 suspected 
variables in 17 clusters. Only three clusters, NGC 5286, 5694, and 6584 have 
been searched in vain, but the variables found around NGC 6528 are con- 
sidered by Baade to belong to the rich Milky Way field, so this cluster also is 
listed as one with no variables. 

Since 1939 a total of 329 new variables has been added in 46 clusters. This 
number includes some which were formerly unpublished or suspected. Con- 
trariwise, some stars formerly considered variable are now listed as doubtful, 
or have been dropped entirely. This number also includes a few formerly 
listed only in catalogues of galactic system variables, and now included for the 
sake of completeness. Nearly half the known globular clusters have been 
searched in the last fifteen years, which shows considerable activity in this 
field. The era of finding large numbers of variables in any one cluster seems 
to be pretty well over. Most of the variable-rich clusters were searched by 
Professor Bailey in the early years of this century, and there seems to be no 
more like them. 

Table II gives a summary of the number of variables and number of periods 
known in the 72 globular clusters for which there is a record of search. It has 
been a little difficult to make this table homogeneous because the sources from 
which it is drawn were not uniform, and arbitrary decisions had to be made. 

The first column of the table gives the NGC number, when available. In 
the second column is the total number of variables with published identifica- 
tion. The third column contains the unpublished variables (u), and the 
suspected (s). In a few cases the unpublished variables may no longer exist; 
when a worker publishes new variables in a cluster, it is sometimes not pos- 
sible to find out whether they correspond with earlier, unpublished variables 
of another worker. The totals of suspected variables include those published 
only as suspects, as well as numbered variables which are now considered 
doubtful. 

Table II, when used alongside Table I of the 1939 catalogue, gives a com- 
plete summary of variables in globular clusters to date. The fourth column, 
headed "New" is the number of variables which have been added since 1939, 
and the fifth column gives the name of the person responsible for their addition. 
In most cases this name is that of the discoverer, but occasionally it is that 
of a worker who first catalogued the variable in a globular cluster. 

The sixth column of the table gives the total number of precise periods 
known, and the seventh, the number which are new since 1939. In the total 
of new periods I have included not only those periods which are completely 
new, but also revised periods in which the period as revised differs markedly 
from the earlier period. Small refinements of period, however, are not counted 



38 



Publications of the David Dunlap Observatory 



TABLE II 
Summary of Variable Stars in 72 Globular Clusters 



NGC 


No. 


Sus. 


New Added by 


Total 


New Added by 


RR 


Prob. 


Non- 




Vars. 


Unpub. 






Per. 






Lyr 


RR 


RR 


104 


11 


2s 


4 


McKibben-Nail 


3 












9 


288 


1 


2u 


1 


Oosterhoff 


1 


1 


Oosterhoff 







1 


362 


14 









10 






7 


1 


3 


1851 


2 


lu 





















1904 


5 


Is 


1 


Rosino 


3 


3 


Rosino 


3 




1 


2298 




6u, 5s 





















2419 


36 



















23 


5 


2808 




4u, 7s 





















3201 


77 




17 


Dowse (16) 
Wright (1) 


59 


59 


Wright 


58 




2 


4147 


4 









3 






3 






4372 




3u, lis 





















4590 


31 




3 


Rosino 


20 


20 


Rosino 


20 


10 


1 


4833 


10 


Is 


10 


Bailey (2) 
Swope (5) 
Dowse (2) 
Wright (1) 


9 


9 


Wright 


6 





4 


5024 


43 




4 


v.d. Hoven v. 
Genderen 


32 


3 


Oosterhoff (2) 
v.d. H. v.G. (1) 


32 


6: 


1 


5053 


10 




1 


Sawyer 


10 


10 


Sawyer (7) 
Rosino (3) 


10 








5139 


164 




1 


Hertzsprung 


153 


3 


van Gent (1) 
Oosterhoff (1) 
Kooreman (1) 


137 


3: 


21 


5272 


187 


2s 


3 


Schwarzschild(l) 171 


19 


Martin 


170 


3: 


3 










Sandage (2) 














5286 




























5466 


18 




4 


Sawyer 


18 


18 


Sawyer 


18 








5634 


7 




7 


Baade 


1 


1 


Baade 


1 


6 





5694 



























Baade 


5 


5s 


5 


Rosino 












5 




5897 


4 




4 


Sawyer 












5 




5904 


97 


Is 


11 


Oosterhoff 


92 


26 


Oosterhoff 


90 


3 


4 


5986 


1 























6093 


7 




4 


Sawyer 


1 


1 


Sawyer 





3 


3 


6121 


43 




11 


de Sitter 


41 


25 


de Sitter, 
Oosterhoff 


41 





2 


6144 


1 




1 


Sawyer 
















6171 


24 



















22 


1 


6205 


10 


5s 


5 


Sawyer (4) 
Arp (1) 


6 


5 


Sawyer (3) 
Kollnig- 


3 


2 


6 
















Schattschneider (1) 




















Arp (1) 








6218 


1 









1 













1 


6229 


22 




21 


Baade (20) 
Sawyer (1) 












20 


2 



Variable Stars in Globular Clusters 
TABLE II (cont.) 



39 



NGC 


No. 


Sus. 


Ne 


w Added by 


Total 


New 


Added by 


RR 


Prob. 


Non- 




Vars. 


Unpub. 






Per. 






Lyr 


RR 


RR 


6235 


2 




2 


Sawyer 












2 




6254 


3 




1 


Arp 


2 


1 


Arp 








3 


6266 


26 























6273 


4 




4 


Sawyer 












2 


1 


6284 


6 




6 


Sawyer 
















6287 


3 




3 


Sawyer 
















6293 


5 




2 


Sawyer 












4 




6333 


13 




12 


Sawyer 


11 


11 


Sawyer 


11 


1: 




6341 


16 


Is 







13 


4 


Oosterhoff 


12 




1 


6356 


5 




5 


Sawyer 
















6362 


15 


2u 





















6366 


2 




2 


Sawyer 












1 




6397 


3 




1 


Swope 


3 


1 


Swope, 
Greenbaum 


1 





2 


6402 


72 









3 










60 


4 


6426 


11 




11 


Baade 

















6522 


9 




9 


Baade 


8 


8 


S. Gaposchkin 


8 





1 


6528 










Baade 
















6535 


1 


lu 


1 


Sawyer 
















6539 




lu 





















6541 


1 























6553 


6 


2s 


6 


Thackeray (5) 
M. Mayall (1) 


3 


3 


Thackeray 


3 





3 


6584 


























6626 


16 




7 


Sawyer 


1 


1 


Sawyer 





7 


5 


6656 


24 


Is 


8 


Sawyer 


22 


15 


Sawyer 


18 





6 


6712 


12 


3u 


11 


Sawyer (10) 
Oosterhoff (1) 


1 


1 


Oosterhoff 







2 


6715 


28 




28 


Rosino 












24 


4 


6723 


19 









19 







19 








6752 


1 
























6760 


4 


2u 


4 


Sawyer 
















6779 


12 




9 


Sawyer (7) 
Rosino (2) 


4 


4 


Sawyer (2) 
Rosino (2) 


2 


2 


7 


6809 


6 




4 


King 


5 


5 


King 


5 


1 





6838 


4 




4 


Sawyer 















3 


6864 


11 


5s 






















6934 


51 




















45 




6981 


39 




8 


Sawyer (7) 
Rosino (1) 


27 


12 


Rosino 


27 


7 




7006 


40 


Is 


32 


Hubble, 
Sandage 


1 


1 


Hubble, 
Sandage 





39 


1 


7078 


93 


8u?2s 


29 


Rosino 


61 







60 


28 


2 


7089 


17 









17 


1 


Sawyer 


13 





4 


7099 


4 




1 


Rosino 


3 


3 


Rosino 


3 





1 


7492 


1 


8u, 6s 























40 



Publications of the David Dunlap Observatory 



as new periods. The next column gives the name of the computer of the 
period. 

The last three columns of the table give the types of variables in the cluster. 
Under the heading "RR Lyr" is given the number of RR Lyrae periods 
actually determined and published in the cluster. The following column gives 
the number of stars which are probably RR Lyrae type, though without 
published periods. A blank indicates that no definite number can be assigned 
at present. For example, in a cluster like NGC 6266 where no magnitudes of 
variables have ever been published, no estimate as to the number of probable 
RR Lyrae stars appears justified. The final column gives the number of non- 
RR Lyrae stars in the cluster. This number includes all stars, with both known 
and unknown periods, which present observations indicate are not RR Lyrae 
variables. Because these stars are of increasing importance, each one of them 
is listed individually in Table III. The total of the last three columns of 
Table II will not necessarily equal the total number of variables in the cluster, 
since some variables remain of unknown type. 

Figure 1 shows the frequency distribution of the number of variables per 



4 5 
u 

V) 

3 



O 
at 

UJ 

I 


z 



FREQUENCY OF VAMABLE STARS 
IN GLOBULAR. CLUSTERS 
1954 



NGC 5139 (I64-) 
NGC 5272 C«87) 



IO 



20 



30 



SO 



AO 
OF VARIABLES 



60 



T 
70 



eo 



90 



too 



NUMBER. 

Figure 1. Distribution of the known, published variables per cluster for 68 clusters. 



Variable Stars in Globular Clusters 41 

cluster, giving the numbers of clusters which have the number of variables 
indicated by the abscissa. More than 50 per cent of the clusters examined, 
37 in all, have 10 variables or less. On the other hand, 18 clusters, about 25 
per cent, have more than 20 variables. It is not possible to say at present how 
the observed frequency of variables in these clusters will compare with the 
true frequency; we might comment, however, that there have been very few 
cases in which, once a globular cluster had been searched for variables, further 
work changed it from a variable-poor to a variable-rich category. That is to 
say, additional hunting for variables increases the numbers in a moderate 
rather than a radical way. 

This actual frequency of variables in globular clusters is interesting because 
it is at variance with common impressions that variable stars abound in 
globular clusters. Of the 72 clusters now examined, only 7 contain more than 
50 variables each; and probably few, if any, clusters will be added in the 
future to this list of variable-rich objects. Since most of the clusters left to be 
studied are small and difficult, they will almost certainly increase the number 
with few variables. Three-quarters of the clusters examined contain less than 
20 variables. It is rather surprising to note that the most frequent number of 
variables found in a globular cluster is one! 

The richest cluster still remains NGC 5272, Messier 3, with 187 variables 
and 2 suspected. A close second is Omega Centauri, NGC 5139, with 164. 
Next in order of richness are Messier 5 (NGC 5904) and Messier 15 (NGC 
7078), with about half as many variables, 97 and 93 respectively. 

NUMBER OF KNOWN PERIODS 

Of the known variables, periods have now been determined for 843 in 38 
clusters, compared with 656 in only 20 clusters in 1939. Hence though the 
studies of the past fifteen years have not enormously increased the number of 
known variables or new periods, they have brought us a better over-all picture 
of the variable content of the entire system of globular clusters than we had 
earlier when the four rich clusters cast their weight too heavily. 

Of the periods now listed, 274 are new, in 30 clusters. For a number of clus- 
ters there have been revisions and redeterminations of periods. For statistical 
purposes I have counted the period as new only if the value was changed by 
more than 0.01 day. 

DISTRIBUTION OF PERIODS AND TYPES 

There are 779 definite RR Lyrae periods known in 28 clusters. In addition 
there appear to be at least 335 more stars which are probably of this character. 
Probably also most of the 185 stars for which the data do not permit a definite 
assignment of type will also prove to be of this class. 

Attention has often been drawn to the difference in frequency of period 
from one cluster to another. It is interesting, however, to portray the frequency 



42 



Publications of the David Dunlap Observatory 



of all known RR Lyrae periods in globular clusters. This is shown in figure 2 
for period intervals of 0.01 day. The outstanding feature of the distribution 
is the conspicuous gap in periods slightly under 0.45 day. It is difficult to 
think that this gap is caused by any observational selection (unless some 
factor causes stars of this period to have a very small range). There certainly 
would appear to be no reason why periods of this length are more difficult to 
determine. The double maximum in this distribution of period frequency 
raises the question as to whether we are concerned with two different types 
of stars. Are RR Lyrae variables whose periods are shorter than 0.45 day the 
same kind of variable as those whose periods are longer? Numerous studies of 
the RR Lyrae stars in the galactic system, for example by Kukarkin, Struve 
and Joy, and Shapley suggest that all RR Lyrae stars do not constitute a 
homogeneous group. 

Nearly 10 per cent of the known variables in globular clusters are definitely 
not RR Lyrae stars, 122 stars in 36 clusters. Table III, which is similar to 
Table II in the first catalogue, lists these 122 stars which are within the visible 
limits of globular clusters and are not RR Lyrae variables. The table in the 
present catalogue is considerably more inclusive than the earlier one, which 
was restricted to stars with known periods over a day. The present table 
includes the W Ursae Majoris types such as Var. 141 in NGC 5272, stars with 
irregular light variation, and stars of unknown type which are listed as 
probably not RR Lyrae stars. Many of these stars are field variables, and not 
cluster members. Any definite information in this regard has been listed, 
but in most cases more observational evidence is necessary to decide whether 
a variable is an actual cluster member. 



40- 



FREAUENCY OF 
RR. LXR.AE PEPUODS 




02 03 

DAY6 



40 



30 



20 



10 



08 09 



I 



Figure 2. Numbers of RR Lyrae periods at intervals of 0.01 day for 781 periods in 28 
globular clusters. 



Variable Stars in Globular Clusters 



43 



TABLE III 
Variables which are not RR Lyrae Stars 



NGC 


No. 


Magni 


tudes 


Period 


Remarks 






Max. 


Min. 


(days) 




104 


1 


11.3 


[16.0 


212.40 


long per. 




2 


11.55 


15.3 


202.84 


long per. 




3 


11.35 


16.1 


192.34 


long per. 




4 


12.0 


14.0 




cycles 150 ± 




5 


13.0 


14.0 




irreg. 




7 


13.3 


13.8 




irreg. 




8 


12.7 


14.7 




cycles 150 ± 




10 


13.1 


13.6 




irreg. 




12 


13.2 


14.0 




irreg. 


288 


1 


13.5 


14.1 


103. 


semireg. 


362 


2 


13.0 


14.5 


105.22 


prob. Small Cloud 




8 


14.8 


16.3 


3.901447 


prob. Small Cloud 




10 


14.7 


16.2 


4.20519 


prob. Small Cloud 


1904 


2 


14.2 


14.8 




irreg. or semireg. 


2419 


1 


17.59 


18.32 




bright irreg. 




8 


17.50 


18.10 




bright irreg. 




10 


17.31 


17.93 




bright irreg. 




18 


17.84 


18.53 




bright irreg. 




20 


17.65 


18.16 




bright irreg. 


3201 


65 

68 


14.01 


15.03 


1 . 6599990 


eclipsing 

red, prob. long per. 


4590 


27* 


10.88 


15.04 




FI Hya, field, long per. 


4833 


2 


13.0 


16.2 


333.7 


RZ Mus, long per. 




9 


14.5 


15.16 


87.7 or 1 


HV 10781 




10 


15.14 


15.9 




Cepheid, HV 10782 




11 


14.5 


16.0: 


303.8 


long per., HV 10783 


5024 


24 


15.71 


16.43 


3? 


type unknown 


5139 


1 


10.7 


12.6 


58.7027 


RV Tauri type 




2 


J13.06 


16.12 


484. 


per. poss. 242 d 




6 


13.84 


15.24 




irreg. 




17 


14.18 


14.61 


60: 


irreg. 




29 


12.44 


13.50 


14.72429 


Cepheid 




42 


12.5 


14.9 


149.4 






43 


13.41 


14.55 


1 . 1568183 


Cepheid 




48 


13.09 


13.95 


4.474293 


Cepheid 




53 


13.30 


13.87 


87: 


irreg. 




60 


13.32 


14.48 


1.349464 


Cepheid 




61 


13.72 


14.48 


2.27358 


Cepheid 




78 


14.17 


14.84 


1.1681179 


eclipsing 




92 


14.10 


14.58 


1.3450659 


Cepheid 




129 


14.18 


14.74 




irreg., long per.? 




133 


13.74 


14.53 


0.31709628 


VV UMa type, field 




138 


12.5 


13.6 


74.6: 


irreg. 




148 


12.9 


13.8 


90: 


irreg. 




152 


12.8 


13.7 


124: 


irreg. 



44 



Publications of the David Dunlap Observatory 
TABLE III {font.) 



NGC 


No. 


Magnitudes 


Period 


Remarks 






Max. 


Min. 


(days) 






161 


13.3 


13.8 




irreg. 




162 


12.9 


13.6 




irreg. 




164 


13.7 


14.0 




irreg., prob. red 


5272 


95* 


13.31 


14.50 


103.19 


semireg. 




141 


14.88 


15.65 


0.2695477 


RV CVn, W UMa type 




154* 


11.86 


13.5 


15.2828 


W Vir type 


5904 


42* 


10.76 


12.46 


25.738 


Cepheid 




50* 


13.6 


14.0 


106? 


irreg. or semireg. 




84* 


11.00 


12.77 


26.5 


Cepheid 




101 


17.16 






SS Cyg type 


6093 


1* 


13.1 


14.5 


15.70 


W Vir type 




6 


9.3 


15.8 


177.13 


S Sco; prob. field 




7 


9.5 


15.5 


222.53 


R Sco; prob. field 




Nova 


6.8 






Nova T Sco 1860 


6121 


4* 


11.0 


13.0 


65 ± 


semireg. 




13* 


12.37 


13.08 




semireg. 


6171 


1 


]14.16 


[16.75 




prob. long per. 


6205 


1* 


13.27 


14.61 


1.45899 


Cepheid 




2* 


12.67 


13.90 


5.11003 


Cepheid 




6* 


13.90 


14.73 


2.11283 


Cepheid 




10* 


13.4 


13.7 




semireg. 




11* 


12.92 


13.71 


92.5 


semireg. 




15 


13.32 


13.67 




irreg. 


6218 


1* 


11.9 


13.2 


15.508 


W Vir type 


6229 


8 


15.30 


16.64 




Cepheid 




22 


15.2 


16.3 




prob. slow 


6254 


1* 


12.8 


13.2 




semireg. 




2* 


11.91 


13.34 


18.754 


W Vir type 




3 


13.10 


13.82 


7.87 


Cepheid 


6273 


2 


13.4 


14.7 




Cepheid? 


6341 


14 


14.8 


15.1 


0.346178 


W UMa type, field 


6397 


1 


11.2 


16.0 


314.6 


long per. , poss. field 




2 


13.8 


14.8 


45 or 60 


semireg. , poss. field 


6402 


1* 


14.3 


16.0 


18.75 


W Vir type 




2* 


15.4 


16.3 


2.7952 


Cepheid 




7* 


14.9 


16.2 


13.59 


W Vir type 




17* 


14.8 


15.7 




field? type unknown 


6522 


7 


17.02 


17.61 




irreg., field 


6541 


1 


12.5 


[16 




prob. long per. 


6553 


Nova 
4 
5 


7.5 




]100 
]100 


Nova Sgr 1943 


6626 


2 


14.3 


14.8 




poss. slow 




3 


14.6 


15.4 




poss. slow 




4* 


13.6 


14.8 


14.0 


W Vir type 




6 


14.3 


15.2 




per. many weeks 




10 


13.5 


14.6 




slow 



Variable Stars in Globular Clusters 
TABLE III (cont.) 



45 



NGC 


No. 


Magnitude? 




Period 


Remarks 








Max. 


Min. 




(days) 






6656 


5* 


12.0 


12.8 






slow 






8* 


12.0 


12.7 






semireg. 






9* 


12.7 


13.3 






semireg. 






11* 


12.9 


13.8 


1 


69050 


Cepheid 






14* 


13.8 


[15.5 


200.2 


long per., field 






17 


14.6 


[15. 






prob. irreg. 




6712 


2 


14.0 


14.9 


105 




AP Set; RV Tau type? 






7 


14.2 


[17.0 






prob. long per. 




6715 


8 


16.8 


17.6 






poss. not RR Lyr 






12 


16.7 


17.3 






poss. not RR Lyr 






19 


16? 


16.5 






poss. not RR Lyr 






25 


16.8 


17.4 






poss. not RR Lyr 




6779 


1* 


15.2 


16.3 


1 


510019 


Cepheid 






3* 


14.4 


15.1 






semireg. 






5 


14.4 


15.2 


43 ± 


semireg. 






6* 


12.9 


14.8 


90.02 


RV Tau type 






7 


15.6 


16.3 


40-50 


semireg. 






8 


15.9 


16.7 


68 ± 


semireg. 






9 


15.6 


16.1 






semireg. 




6838 


1 


13.5 


14.9 






slow, Z Sge 






2 


13.8 


14.7 






slow 






3 


15.2 


17.0 






eclipsing 




7006 


19 






252: 




long per. 




7078 


1* 


14.39 


15.75 


1 


437478 


Cepheid 






86 


13.4 


14.6 






prob. Cepheid 




7089 


1* 


13.29 


14.78 


15.5647 


W Vir type 






5* 


13.30 


14.47 


17.5548 


W Vir type 






6* 


13.07 


14.31 


19 


.3010 


W Vir type 






11* 


12.12 


13.25 


67.086 


RV Tau type 




7099 


4 


16.4 


[18 


11- 


-15 


U Gem type 





*Spectrum available. 



Almost all types of variable stars are represented. Table III lists 2 novae, 
15 Cepheids with periods up to 10 days, 13 stars with periods from 10 to 26 
days, either Cepheids or W Virginis stars, 18 long period variables, 3 eclipsing 
variables, 3 W Ursae Majoris, 2 SS Cygni, and 4 RV Tauri stars, as well as 
39 irregular and semi-regular variables of several kinds. The remainder are of 
indefinite type. No flare stars or R Coronae Borealis variables have been 
noted as yet. 

Description of the Catalogue 

The catalogue contains every cluster for which there is a published record 
of a search for variables, and a few others for which the unpublished data 
have been supplied to the writer. The clusters are arranged in order of NGC 



46 Publications of the David Dunlap Observatory 

number, or, lacking that, by right ascension. If the cluster has a Messier 
number, it is given. The right ascension and declination are for the equinox 
of 1950. 

The variables are numbered according to the number given by the discoverer 
except in a few cases where an adjustment has had to be made. The x and y 
co-ordinates are given in seconds of arc and correspond in direction to right 
ascension and declination. Whenever they have been published, magnitudes, 
epochs, and periods are given. A blank in these columns indicates lack of 
published data. When an observer has given a table of maximum and minimum 
magnitudes, these have been taken. However, in many cases the writer has 
had to read these values from published measures of many plates by taking 
the brightest and faintest estimates of magnitude for the variable. Epoch of 
maximum gives the number of days past J.D. 2,400,000.000. For stars in 
clusters like Omega Centauri and Messier 3 where many investigations of 
small period changes have been made, only one value (usually the latest or 
best determined) is given for the period. 

Suspected variables have not been included in the catalogue in general, 
except for those where numbers had been previously assigned. Announced 
variables which are now considered not to vary have been left in the catalogue 
so that a reader may be aware of them, but they have not been included in 
the totals of known variables. 

In an attempt to clear up some of the confusion which has existed for years 
in Messier 3, NGC 5272, the writer has identified the variables whenever 
possible in von Zeipel's catalogue. A similar process has been followed for 
Messier 15, NGC 7078, with Kustner's catalogue, since Rosino published 
some of these identifications for his new variables in that cluster. 

When necessary, notes pertaining to a cluster are given after the data on 
that cluster. 

References to Literature on Variable Stars in Globular Clusters 

To the catalogue is appended a complete bibliography of literature on variable 
stars in globular clusters. The 125 references given in the 1939 catalogue have 
now been expanded to 193, including 6 references before 1939 found after the 
publication of that list. This total does not include references to unpublished 
correspondence, which contains much vital information. As formerly, the 
references are arranged by years, and alphabetically under author for any 
given year. At the end of each cluster, the list of numbers indicates the refer- 
ences to that cluster, and special note is made of the references in which 
photographs or charts of the clusters giving identification of the variables 
can be found. 

Acknowledgments 

In the preparation of this catalogue I have had a great deal of co-operation 



Variable Stars in Globular Clusters 47 

from astronomers working on variables in clusters, who sent results in advance 
of publication. It is a pleasure to acknowledge help from the following: 
Dr. Harlow Shapley and his co-workers at the Harvard College Observatory, 
including Mrs. Virginia McKibben-Nail, Miss Frances Wright, Miss xA.rville 
Walker, and Mr. Ivan King; from the astronomers at Mount Wilson and 
Palomar Observatories, especially Dr. Walter Baade, Dr. Allan Sandage, 
Dr. Halton Arp, and Miss Henrietta Swope; from Dr. David Thackeray of 
the Radcliffe Observatory, Dr. P. Th. Oosterhoff of the Leiden Observatory, 
and Dr. L. Rosino of the Bologna Observatory. Dr. H. Wilkins of the National 
Observatory of Argentina has been exceedingly helpful in picking up incon- 
sistencies or errors in existing literature and drawing them to my attention, 
in order that they may be remedied as far as possible in this edition of the 
catalogue. The identification of the variables in Messier 3 with von Zeipel's 
numbers was aided by charts supplied from Mount Wilson and Palomar 
Observatories; much of the computation was done at this observatory by Mr. 
Donald Morton. I am deeply grateful to the Publications Fund of the Uni- 
versity of Toronto Press for help with this publication. 

Richmond Hill, Ontario 
September 30, 1954 



SECOND CATALOGUE OF VARIABLE STARS 
IN GLOBULAR CLUSTERS 

NGC 104 (47 Tucanae) a 00 h 21 m .9, 5-72° 21' 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 








Max. 


Min. 


Maximum 






1 


+ 36.8 


-112.6 


11.3 


[16.0 


12717. 


212.40 




2 


+ 64.7 


-193.9 


11.55 


15.3 


12685. 


202.84 




3 


+ 328.4 


+ 52.8 


11.35 


16.1 


12755. 


192.34 




4 


- 18.8 


-160.4 


12.0 


14.0 




150 ± 


cycles 


5 


+ 271.9 


-284.6 


13.0 


14.0 






irreg. 


6 


+ 97.3 


-103.8 


13.2 


13.8 


var? 






7 


+ 349.2 


-113.0 


13.3 


13.8 






irreg. 


8 


+ 16.0 


+ 57.0 


12.7 


14.7 




150 ± 


cycles 


9 


- 108 


- 78 


13.5 


14.5 




short 


HV 810 


10 


+ 72 


+702 


13.1 


13.6 




irreg. 


HV 811 


11 


+ 306 


+ 138 


13.2 


14.0 




irreg. 


HV813 


12 


+ 1254 


-348 


13.6 


14.4 




short 


HV 814 



A suspected variable, HV 812, is not listed above. 
Refs. 9, 14, 20, 68, 139, 173, 175. Plate in 20. 



NGC 288 a 00 h 50 m .2, 5 -26° 52' 



1 



55 



+ 79 



13.5 



14.1 



25576 



103 



2 unpublished variables? 
Refs. 87, 150 with chart. 



NGC 362 a 01 h 01 m .6, 5 -71° 07' (Corrected position) 



1 


- 246.2 


- 67.6 


14.9 


16.1 


23751.558 


0.5850512 




2 


+ 41.4 


-204.4 


13.0 


14.5 


24391.8 


105.22 


HV206 


3 


+ 93.6 


-143.2 


14.6 


16.1 


23604.806 


0.4744151 




4 


- 50.2 


- 27.3 


14.0 


15.8 








5 


- 79.2 


- 31.9 


15.1 


16.4 


24025.729 


0.4900846 




6 


+ 82.4 


+ 15.5 


14.9 


16.3 


24461 . 642 


0.5146080 




7 


+ 131.1 


- 21.2 


14.8 


16.0 


24468.687 


0.5285492 




8 


+ 33.4 


-308.5 


15.0 


16.5 


24433.677 


3.901447 


HV212 


9 


- 400.4 


+224.4 


14.7 


16.0 


24404.670 


0.5476126 




10 


+ 282.8 


-381.8 


14.9 


16.4 


23315.643 


4.20519 


HV 214 


11 


- 136.1 


- 26.0 


15.1 


16.0 








12 


- 30.4 


-115.4 


15.2 


16.1 


24391.839 


0.65254518 




13 


+ 14.5 


+ 38.8 


14.6 


16.3 








14 


- 23.8 


- 66.8 


14.8 


16.2 









Refs. 11, 14, 20, 90, 94, F, J. Plate in 20, 94. 

48 



Variable Stars in Globular Clusters 
Catalogue — Continued 
NGC 1851 a 05 h 12 m .4, 5 -40° 05' 



49 



No. 



Magnitudes 
Max. Min. 



Epoch of Period 
Maximum 



Remarks 



1 4-261 - 9 

2 - 45 + 30 



14 
14 



15i 



1 unpublished variable. 
Refs. 72, 87. No map. 



NGC 1904 (Messier 79) a 05 h 22»'.2, 5 -24° 34' 



1 


+ 


29.6 


-199.6 


var.? 








med. 16.0 


2 


+ 


78.3 


- 68.3 


14.2 


14.80 






semireg. 


3 


+ 


34.8 


- 64.4 


15.9 


16.7 


34032.40 


0.73602 




4 


+ 


93.4 


- 50.1 


15.6 


16.7 


32877.50 


0.63492 




5 


— 


11.6 


+ 20.2 












6 


— 


70.8 


+ 115.6 


16.0 


16.6 


32940.25 


0.33522 





Refs. 14, 20, 181. Plates in 20, 181. 



NGC 2298 a 06 h 47 m .2, 5 -35° 57' 

6 unpublished variables, 5 suspected. 
Ref. F. 



NGC 2419 a 07 h 34"\8, 8 +39° 00' 



1 


+ 


40 


- 52 


17.59 


18.32 


2 


— 


4 


- 19 






3 


+ 


52 


- 24 


18.66 


19.96 


4 


+ 


80 


- 15 


18.84 


19.65 


5 


+ 


33 


+ 47 


18.75 


19.72 


6 


+ 


56 


-127 


18.86 


19.64 


7 


+ 


91 


+ 87 


18.69 


19.77 


8 


— 


17 


+ 41 


17.50 


18.10 


9 


— 


32 


+ 88 


18.59 


19.76 


10 


+ 


20 


- 51 


17.31 


17.93 


11 


+ 


95 


- 8 


18.55 


19.81 


12 


+ 


133 


+ 111 


18.69 


19.71 


13 


+ 


101 


- 10 


18.55 


19 . 75 


14 


— 


115 


- 13 


18.81 


19.62 


15 


+ 


62 


+ 40 


18.62 


L9 76 


16 


+ 


47 


+ 72 


18.77 


19.85 


17 


+ 


109 


+ 111 


18.65 


19.75 


18 


— 


15 


+ 114 


17.84 


18.53 


19 


— 


107 


- 40 


18.77 


19.86 


20 


— 


28 


+ 45 


17.65 


18.16 



irreg. 



irreg. 
irreg. 



irreg. 
irreg. 



50 



NGC 2419 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 



Magnitudes 
Max. Min. 



Epoch of Period 
Maximum 



Remarks 



21 


— 


55 


+ 30 


18.76 


19.74 


22 


+ 


109 


- 5 


18.60 


19.84 


23 


+ 


27 


+ 79 






24 


— 


147 


- 10 


18.94 


19.58 


25 


— 


59 


+ 38 


18.78 


19.70 


26 


— 


70 


- 50 






27 


+ 


19 


-103 


19.10 


19.55 


28 


— 


192 


+ 59 


18.72 


19.78 


29 


— 


58 


- 7 


19.01 


19.92 


30 


— 


26 


+ 23 






31 


+ 


154 


-146 


19.08 


19.53 


32 


— 


19 


+ 48 


18.60 


19.71 


33 


+ 


47 


- 17 


19.11 


20.13 


34 


+ 


21 


+ 157 


19.00 


19.66 


35 


+ 


43 


+ 8 


18.88 


20.00 


36 


+ 


23 


+ 44 


19.10 


19.83 



Ref. 108, with plate, I. 

NGC 2808 a 09 h 10 m .9, 5 -64° 39' 
4 unpublished variables, 7 suspected. 
Refs. F, N. 



NGC 3201 «10 h 15 m .5, 5 -46° 09' 



1 


+ 


59 


-118 


14.71 


15.76 


22484.504 


0.6048761 


2 


+ 


29 


-117 


14.61 


15.60 


28272 . 352 


0.5326722 


3 


+ 


182 


- 43 


14.90 


15.49 


22100.533 


. 5994093 


4 


+ 


155 


+ 3 


14.76 


15.60 


23198.539 


0.6300006 


5 


+ 


42 


- 24 


14.63 


15.75 


23172.676 


0.5015359 


6 


— 


116 


-143 


14.50 


15.55 


23166.545 


0.5256131 


7 


— 


91 


-189 


14.87 


15.35 


23566 . 533 


. 6303322 


8 


— 


69 


- 99 


15.00 


15.46 


23166.613 


0.6286280 


9 


— 


51 


- 91 


14.86 


15.57 


23506.605 


0.5266970 


10 


— 


181 


+235 


14.66 


15.59 


22429.597 


0.5351571 


11 


— 


104 


+ 112 


14.87 


15.40 


29696.446 


0.2990471 


12 


— 


86 


+ 108 


14.50 


15.53 


23547.577 


. 4955583 


13 


— 


160 


+ 92 


14.57 


15.50 


23163.664 


0.5752145 


14 


— 


156 


+ 133 


14.61 


15.67 


23961.495 


0.5092897 


15 


— 


279 


-173 


14.34 


15.43 


23164.572 


0.5346644 


16 


— 


197 


-238 










17 


+ 


11 


- 25 


14.84 


15.80 


28253 . 276 


0.5655773 


18 


+ 


23 


- 24 










19 


+ 


23 


+317 


14.54 


15.45 


29696.361 


0.5250201 


20 


+ 


39 


+284 


14.45 


15.55 


29273 . 322 


0.5291064 






Variable Stars in Globular Clusters 
Catalogue — Continued 



51 



NGC 3201 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




21 


+ 94 


4-135 


14.75 


15.62 


23191.514 


0.5666509 


22 


- 100 


- 56 


14.72 


15.45 


23165.679 


0.6059842 


23 


- 49 


- 50 










24 


- 339 


+ 17 


14.76 


15.35 


23166.521 


0.5889798 


25 


+ 93 


+ 173 


14.68 


15.53 


23566.533 


0.5147963 


26 


+ 219 


-140 


14.80 


15.61 


23198.542 


0.5689949 


27 


+ 58 


-323 


14.11 


15.32 


23164.508 


0.4842943 


28 


+ 66 


- 48 


14.98 


15.74 


23932.478 


0.5786766 


29 


- 256 


+ 113 










30 


- 289 


+272 


14.56 


15.36 


23166.488 


0.5158559 


31 


+ 182 


+ 131 


14.65 


15.51 


23505 . 620 


0.5194894 


32 


+ 195 


+ 199 


14.55 


15.56 


23190.624 


0.5611656 


33 


+ 48 


- 40 


not var. 






34 


+ 296 


+285 


14.37 


15.62 


23547.577 


0.4678883 


35 


- 11 


+ 121 


14.90 


15.45 


22484.504 


0.6155244 


36 


- 108 


- 11 








0.484 


37 


- 68 


- 74 










38 


- 61 


- 60 


14.70 


15.60 


23877.612 


0.5091616 


39 


+ 41 


+ 54 


14.83 


15.80 


23181.537 


0.4832092 


40 


- 96 


+ 68 










41 


+ 291 


+ 28 










42 


- 301 


+ 197 


14.39 


15.44 


27565.286 


0.5382490 


43 


- 377 


+ 15 


14.80 


15.39 


23166.665 


0.6761289 


44 


+ 31 


+ 67 


15.01 


15.66 


23190.635 


0.6107344 


45 


+ 127 


- 32 


14.85 


15.60 


23165.684 


0.5374165 


46 


- 396 


-510 


14.56 


15.35 


23167.570 


0.5431990 


47 


+ 108 


+245 










48 


- 252 


+ 12 










49 


- 38 


+ 151 


14.74 


15.43 


23172.499 


0.5814870 


50 


- 13 


+ 27 










51 


- 205 


- 26 


14.37 


15.50 


28273.328 


0.5205454 


52 


+ 14 


-812 










53 


- 873 


-758 


14.57 


15.38 


23191.540 


0.5334705 


54 


+ 671 


-804 


14.67 


15.44 


23548.660 


0.5558721 


55 


- 338 


+767 










56 


+ 246 


+ 94 


14.95 


15.62 


23164.591 


0.5903376 


57 


+ 288 


- 72 


14.80 


15.58 


28628.317 


0.5934373 


58 


+ 346 


- 80 


14.94 


15.45 


23164.538 


0.6220418 


59 


- 490 


- 70 


14.32 


15.40 


23528.608 


0.5177106 


60 


- 850 


+ 95 


14.22 


15.47 


23165.526 


0.5035723 


61 


-1125 


+ 175 










62 


-1060 


-186 


14.62 


15.28 


23506.538 


0.5697558 


63 


-1000 


+ 59 


14.36 


15.39 


23914.582 


0.5680998 


64 


- 646 


+863 


14.40 


15.36 


23191.538 


0.5224218 


65 


- 544 


+ 797 


14.01 


15.03 


26417.421 


1.6599990 eel. 


66 


- 398 


+289 


not var 









52 

NGG 3201 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 




x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 










Max. 


Min. 


Maximum 






67 


— 


374 


-120 












68 


— 


283 


+846 










long per. 


69 


— 


221 


+995 


14.34 


15.50 


23914.575 


0.5122704 




70 


— 


221 


- 13 


not var. 










71 


— 


182 


-117 


14.65 


15.46 


23506.605 


0.6011859 




72 


— 


161 


+596 


not var. 










73 


— 


128 


+86 


14.39 


15.60 


23172.569 


0.5199500 




74 


— 


94 


+ 36 


not var. 










75 


— 


81 


+ 147 


not var. 










76 


— 


62 


- 42 








0.526 




77 


— 


10 


- 52 


14.67 


15.40 


22429.592 


0.5676648 




78 


— 


8 


-143 












79 


+ 


10 


-101 


not var. 










80 


+ 


60 


+ 23 












81 


+ 


96 


-153 












82 


+ 


161 


-166 


not var. 










83 


+ 


177 


+ 172 


14.58 


15.67 


23190.624 


0.5451918 




84 


+ 


358 


+703 


14.65 


15.43 


22077.566 


0.5136787 




85 


+ 


569 


-403 


not var. 










86 


+ 


611 


-315 


not var. 










87 


+ 1013 


-460 


14.65 


15.30 


23164.633 


0.6038866 





Unpublished epochs and magnitudes, ref. Q. 
Refs. 46, 59, 127, 140 with print. 



NGC 4147 a 12 h 07 m .6, 5 +18° 49' 



1 


- 100.1 


- 45.7 


15.90 


16.95 


25324.68 


0.4993 


2 


- 20.2 


- 28.8 


15.95 


17.25 


25305.541 


. 4920 


3 


- 28.5 


- 35.3 


16.32 


16.78 


25321 . 528 


0.3834 


4 


+ 1 


+ 18 


16.5 


17.1 







Refs. 36, 85, 89. Print in 85. 

NGC 4372 a 12 h 23 m .O, 5 -72° 24' 

3 unpublished variables, 11 suspected. Ref. N. 



NGC 4590 (Messier 68) a 12 h 36 m .8, 5 -26° 29' 



1 


- 280 


+ 109 


15.55 


16.11 


34067.792 


0.349599 


2 


- 168 


- 45 


15.05 


16.29 


33663.695 


0.5781805 


3 


- 140 


+ 91 


15.40 


16.15 


33661 . 66 


0.4128? 


4 


- 117 


-131 


15.65 


16.20 




0.2864? 


5 


- 56 


+ 170 


15.47 


16.11 


33741.570 


0.3878 



NGC 4590 



Variable Stars in Globular Clusters 
Catalogue — Continued 



53 



No. 




x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 










Max. 


Min. 


Maximum 




6 





54 


+ 17 


15.75 


16.07 


33741.542 


0.269261 


7 


— 


50 


- 79 


15.71 


16.07 


34093.461 


0.279294 


8 


— 


38 


-134 


15.69 


16.08 


34093.509 


0.280560 


9 


— 


31 


+ 40 


15.43 


16.28 






10 


— 


25 


- 16 


15.28 


16.62 






11 


— 


18 


-112 


15.65 


16.16 


33741.541 


0.369499 


12 


— 


10 


- 1 


15.07 


16.23 






13 


— 


6 


- 56 


15.72 


16.11 


34149.415 


0.265638 


14 


— 


4 


+218 


15.02 


16.25 


33663.714 


0.5567753 


15 


+ 


9 


+ 58 


15.65 


16.36 






16 


+ 


11 


+ 80 


15.65 


16.22 


34071.536 


0.418330 


17 


+ 


16 


- 75 


15.65 


16.60 






18 


+ 


19 


- 96 


15.69 


16.19 


33741.46 


0.367345 


19 


+ 


33 


+ 70 


15.65 


16.20 






20 


+ 


34 


-114 


15.69 


16.14 


34118.451 


0.385763 


21 


+ 


48 


+ 8 


15.82 


16.60 






22 


+ 


61 


- 22 


15.30 


16.52 






23 


+ 


64 


+380 


14.85 


16.13 


34506.392 


0.658898 


24 


+ 


74 


- 8 


15.64 


16.13 


34093.522 


0.376495 


25 


+ 


141 


+ 123 


15.01 


16.15 


33770.450 


0.6415354 


26 


+ 


158 


- 44 


15.63 


16.11 


33799.370 


0.413217 


27 


+ 


380 


+263 


10.88 


15.04 




long Sp., field 


28 


+ 


440 


+ 160 


14.81 


16.18 


34120.498 


0.6067773 


29 


+ 


287 


-252 


15.65 


16.15 






30 


+ 


112 


- 78 


15.70 


16.15 






31 


— 


109 


+ 90 


15.49 


16.10 


33741.461 


0.399658 



Variables Nos. 29, 30, 31 are unpublished, found by Rosino, ref. L. 
Refs. 44, 49, 117a, 159, 186, L. Print in 49. 



NGC 4833 a 12 h 56 ra .0, 5 -70° 36' 



1 


— 


264 


+468 


15.32 


15.86 


29375.251 


0.750101 


RY Mus 


2 


+ 


378 


-354 


13.0 


16.2: 


26166 


333.7 


RZ Mus 


3 







+ 6 


15.46 


15.9 


29363 . 248 


0.744526 


HY 10775 


4 







+ 24 


15.24 


15.88 


29381.249 


0.655536 


HV 10776 


5 


+ 


132 


- 66 


15.4 


16.0 


29381.240 


0.629414 


HV 10777 


6 


+ 


120 


+ 120 


15.3 


15.9 


29381 . 297 


0.653967 


HV 10778 


7 


+ 


72 


- 6 


15.49 


16.05: 


29374 256 


0.668422 


HV 10779 


8 


— 


168 


+498 


15.59 


15.79 


var? 




HV 10780 


9 


— 


42 


- 6 


14.5 


15.16 


28635 


87.7: 


HV 10781 


10 


+ 


72 


+414 


15.14 


15.9 






HV 10782 


11 


— 


336 


-828 


14.5 


16.0: 


24320 


303.8 


HV 10783 


Refs. 65, 


87, 


149. 















54 



Publications of the David Dunlap Observatory 



Catalogue — Continued 
NGC 5024 (Messier 53) a 13 h 10 m .5, S + 18° 26' 



No. 




x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 










Max. 


Min. 


Maximum 




1 


+ 


9.6 


-171.0 


16.05 


16.95 


22789.486 


0.6098214 


2 


— 


78.0 


-183.6 


16.38 


16.88 


22787.498 


0.3861005 


3 


— 


60.6 


-138.0 


16.14 


16.93 


22763.412 


0.6306111 


4 


— 


169.5 


-156.6 


16.41 


16.84 


23113.482 


0.3851668 per. var. 


5 


— 


237.0 


-258.0 


15.89 


16.98 


22790.515 


0.6394274 


6 


+ 


123.6 


+ 13.5 


16.08 


17.11 


22790.620 


0.6640168 


7 


+ 


79.5 


+ 83.5 


16.02 


16.95 


22763.515 


0.5448337 


8 


+ 


72.0 


+ 60.0 


16.28 


16.95 


22762.584 


0.615531 


9 


+ 


67.5 


- 40.5 


16.03 


17.10 


22789.484 


0.6003729 


10 


— 


138.6 


+ 54.0 


15.90 


16.98 


22789.443 


0.6082560 


11 


— 


143.4 


- 58.5 


16.04 


16.82 


22762.647 


0.6299539 


12 


+ 


409.5 


+ 187.5 


16.05 


16.91 


22789.497 


0.6125863 


13 


+ 


462.0 


-299.7 


15.87 


17.03 


22789.533 


0.6274465 


14 


+ 


354.6 


-207.0 


15.88 


17.00 


22790.490 


0.5454024 


15 


+ 


248.4 


+228.0 


16.39 


16.67 


23113.458 


0.308724 


16 


— 


136.5 


-202.5 


16.43 


16.90 


22790.520 


0.3031707 


17 


— 


214.5 


+ 114.0 


16.29 


16.80 


22762.612 


0.3814992 


18 


— 


96.0 


+ 12.6 


15.83 


16.42 






19 


+ 


165.6 


- 42.0 


16.34 


16.85 


22789.465 


0.3918418 


20 


+ 


188.4 


-351.6 


16.32 


16.81 


23113.615 


0.3844312 per. var. 


21 


+ 


437.4 


- 27.0 


16.32 


16.81 


22790.410 


0.3384650 


22 


— 


53.4 


-288.0 


16.56 


16.85 


var? 




23 


+ 


96.0 


- 89.7 


16.34 


16.88 


23113.460 


0.3658077 per. var. 


24 


— 


118.5 


- 29.2 


15.71 


16.43 




3.? 


25 


+ 


130.3 


+ 31.7 


16.16 


16.90 


22787.552 


0.7051762 


26 


— 


288.0 


-279.9 


16.29 


16.74 


22789.485 


0.3911185 


27 


— 


203.8 


-157.9 


16.16 


16.93 


22790.376 


0.6710576 


28 


— 


181.4 


+459.0 


15.78 


16.94 


22790.500 


0.6327877 


29 


+ 


125.4 


- 79.5 


16.56 


17.04 


22808.33 


0.823239 


30 


+ 


57.7 


-482.8 


16.18 


17.04 


22790.47 


0.5354938 


31 


+ 


60.6 


- 0.1 










32 


— 


111.9 


- 86.6 


16.26 


16.65 


22790.475 


0.3901324 


33 


— 


165.0 


+ 12.2 


16.58 


17.14 






34 


— 


144.0 


-216.7 


16.48 


16.70 


not var. 




35 


+ 


104.1 


+ 153.2 


16.38 


16.88 


22789.480 


0.3726736 


36 


+ 


120.3 


+306.5 


16.33 


16.71 


23113.698 


0.3732511 per. var. 


37 


— 


44.0 


+ 62.2 


15.68 


16.48 






38 


+ 


21.3 


-143.2 


16.08 


16.81 


22789.483 


0.7057825 


39 


— 


234.0 


+212.5 


16.84 


17.26 


not var. 




40 


+ 


8.9 


+ 111.5 


16.55 


16.89 


26418.664 


0.3148076 


41 


+ 


19 


+ 66 










42 


— 


67 


+ 17 


15.54 


16.33 






43 


— 


34 


+ 53 










44 


+ 


53 


- 2 


15.20 


15.99 






45 


— 


5 


- 36 










46 


— 


12 


+ 34 











Refs. 51, 58, 79, 92, 97, 132, 160. Prints in 51, 92, 160. 






Variable Stars in Globular Clusters 



55 



Catalogue — Continued 



NGC 5053 a 13 h 13 m .9, 5 +17° 57' 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Peri id 



Remarks 



1 


- 380 


+ 158 


15.80 


16.60 


30519.640 


0.647178 


2 


- 193 


- 3 


16.00 


16.50 


30556.611 


0.378953 


3 


+ 140 


+ 138 


15.90 


16.55 


30519.640 


0.592946 


4 


+ 31 


-114 


15.75 


16.55 


31969.580 


0.667061 


5 


+ 220 


-220 


15.90 


16.45 


29786 . 690 


0.714861 


6 


+ 126 


+ 77 


16.00 


16.45 


30555.617 


0.292199 ' 


7 


- 87 


+ 169 


16.05 


16.40 


30880.610 


0.351581 


8 


+ 117 


+ 50 


16.05 


16.55 


31203.460 


0.362842 


9 


- 199 


+382 


15.95 


16.55 


31911.500 


0.741741 


10 


+ 94 


+ 56 


16.10 


16.45 


30883.640 


0.437397 



Refs. 83, 158, 168. Prints in 83, 168. 



NGC 5139 (« Centauri) a 13 h 23 m .8, 5 -47° 13' (corrected position) 



1 


— 


416.16 


+298.89 


10.7 


12.6 




58.7027 


2 


— 


340.00 


+238.51 


]13.06 


16.12 




484. 


3 


— 


507.93 


+ 167.43 


14.19 


15.11 


26524.245 


0.8412205 


4 


— 


337.61 


+262.10 


13.89 


15.18 


26473.374 


0.6273172 


5 


— 


282.75 


+328.29 


14.06 


15.34 


26460.409 


0.5152828 


6 


— 


162.43 


+252.95 


13.84 


15.24 




irr. 


7 


+ 


153.19 


+879.15 


13.98 


15.11 


26470.425 


0.7130181 


8 


+ 


629.43 


+ 16.20 


13.90 


15.29 


26472.238 


0.5212846 


9 


— 


473.17 


+ 137.14 


14.35 


15.32 


26453.421 


0.5233358f 


10 


— 


397.76 


+244.48 


14.38 


14.90 


26524.241 


0.374950 


11 


— 


158.63 


+338.73 


14.3 


15.0 


irr. 


0.56481 


12 


— 


193.16 


+274.34 


14.43 


14.95 


26469.446 


0.3867486 


13 


— 


487.26 


+ 199.54 


13.98 


15.12 


26438.457 


0.6690480 


14 


— 


473.51 


-627.56 


14.40 


15.01 


26472.456 


0.3771799 


15 


— 


194.09 


+242.62 


14.13 


14.98 


26469 . 427 


0.8106198 


16 


+ 


517.05 


-536.81 


14.38 


14.95 


26435.488 


0.3301694 


17 


+ 


522.24 


+200.00 


14.18 


14.61 




60: irr. 


18 


+ 


596.64 


+220.15 


13.89 


15.18 


26454.408 


0.6216682 


19 


+ 


144.14 


+ 32.44 


14.68 


15.22 


26434.540 


0.2995533 


20 


+ 


280.88 


+ 32.06 


14.01 


15.20 


26469.388 


0. 6155547f 


21 


— 


355.75 


+ 162.07 


14.20 


14.81 


26469.257 


0.3808180 


22 


+ 


552.18 


-330.22 


14.43 


14.97 


irr. 


0.39609 


23 


+ 


2.54 


+240.71 


14.26 


15.39 


26470.392 


0.5108651 


24 


+ 


524.71 


-336.96 


14.41 


14.88 


26468.520 


0.4622108 


25 


— 


210.77 


+ 17.48 


13.98 


15.07 


26469.433 


0.5885005 


26 


— 


229 . 58 


+ 101.21 


14.36 


15.06 


26459.469 


0.7847199f 


27 


— 


205.47 


+ 24.11 


14.50 


15.19 


26471.386 


0.6156764 


28 








not vai 


'. 






29 


— 


193.25 


- 6.45 


12.44 


13.50 


26465.88 


14.72429 


30 


— 


307.92 


- 75.01 


14.40 


14.86 


irr. 


0.40448f 


31 








not var. 






32 


+ 


1 74 . 39 


+420 01 


13 87 


15 20 


26469.421 


0.6204317 



56 

NGG 5139 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




33 


- 554.54 


- 24.00 


13.88 


15.24 


26461.436 


0.6023262 


34 


- 396.87 


-269.04 


14.18 


15.13 


26471.369 


0.7339450 


35 


+ 71.70 


+365.07 


14.37 


14.94 


26468.484 


0.3868382 


36 


+ 246.11 


+789.42 


14.38 


14.93 


irr. 


0.37984f 


37 






not var 








38 


+ 169.10 


-470.37 


14.36 


15.11 


26469.456 


0.7790480 


39 


+ 741.86 


-365.80 


14.33 


14.99 


26469.474 


0.3933567 


40 


- 220.99 


-125.30 


13.95 


15.15 


26471.364 


0.6340969f 


41 


+ 151.80 


-142.18 


14.03 


15.06 


26523.185 


0.6629590 


42 


+ 0.21 


- 50.21 


12.5 


14.9 




149.4 


43 


- 119.23 


+ 103.16 


13.41 


14.55 


26470.385 


1 . 1568183 


44 


- 243.40 


-354.05 


14.24 


15.36 


26466.380 


0.5675440 


45 


- 764.48 


+ 80.97 


13.94 


15.19 


26473.404 


0.5891259 


46 


- 770.61 


+ 170.11 


14.03 


15.17 


26454.471 


0.6869382 


47 


- 504.32 


+269.26 


14.27 


14.73 


irr. 


0.48517f 


48 


- 86.54 


-104.54 


13.09 


13.95 


26523.70 


4.474293 


49 


- 391.98 


-553.77 


14.16 


15.28 


26470.407 


0.6046505 


50 


- 530.75 


+ 65.40 


14.57 


15.10 


26472.336 


0.3861815 


51 


- 36.85 


+258.73 


13.86 


15.16 


26441.448 


0.5741359 


52 


- 112.85 


+ 36.47 


13.60 


14.22 


26461.348 


0.6603737 


53 


- 482.79 


-447.74 


13.30 


13.87 




87: irr. 


54 


- 229.39 


+592.76 


14.22 


15.05 


26472.412 


0.7728973 


55 


- 617.73 


-816.68 


14.38 


15.39 


26471.323 


0.5816930 


56 


- 515.93 


-541.96 


14.37 


15.38 


26428.437 


0.5680030 


57 


+ 635.72 


-493.26 


14.31 


15.06 


26471 . 342 


0.7944118 


58 


- 335.44 


+277.68 


14.49 


14.74 


26524.233 


0.3699057 


59 


- 282.90 


- 65.84 


14.20 


15.18 


26523.231 


0.5185176f 


60 


- 108.42 


-247.33 


13.32 


14.48 


26473.513 


1.349464 


61 


+ 280.44 


+ 68.07 


13.72 


14.48 


26468.345 


2.273582 


62 


- 199.80 


+ 45.28 


13.88 


15.10 


26424.515 


0.6197937 


63 


- 996.82 


-491.46 


14.47 


15.04 


26438.567 


0.8259507 


64 


- 448.01 


-457.49 


14.45 


15.02 


26466.410 


0.3444512 


65 


- 454.49 


-474.32 


14.77 


15.22 


26523.238 


0.06272282 


66 


- 133.37 


+375.15 


14.46 


14.95 


irr. 


0.40745f 


67 


- 178.11 


+593.57 


14.18 


15.28 


26470.377 


0.5644551 


68 


- 338.18 


+545.12 


14.15 


14.67 


26469.366 


0.5344773 


69 


- 965.76 


-530.94 


14.10 


15.25 


26438.468 


0.6532165 


70 


+ 417.83 


-304.65 


14.45 


14.94 


26524.219 


0.3906091 


71 


+ 220.39 


+ 47.13 


14.38 


14.92 


26523.271 


0.3574826 


72 


+ 477.85 


+734.87 


14.42 


14.94 


26471 . 459 


0.3845163 


73 


- 532.49 


+750.76 


13.87 


15.18 


26472.358 


0.5752184 


74 


+ 215.47 


+664.83 


13.75 


15.24 


26454.399 


0.5032505 


75 


+ 341.44 


+591.55 


14.42 


14.87 


26456.501 


0.4222508 


76 


+ 113.31 


+511.81 


14.40 


14.82 


26523.135 


0.3378438 



Variable Stars in Globular Clusters 
Catalogue — Continued 



57 



NGC 5139 



No. 




x" 


y" 


Magni 
Max. 


tudes 
Min. 


Epoch of 
Maximum 


Period Remarks 


77 


+ 


352 . 29 


+392.42 


14.45 


14.93 


irr. 


0.42593f 


78 


+ 


586.10 


+ 146.68 


14.17 


14.84 


27943.307 


1.1681179 


79 


+ 1000.12 


- 51.02 


13.97 


15.27 


26456 . 423 


0.6082747 


80 


+ 1304: 


-108: 


14.1: 


14.8 




0.45 or 0.31 


81 


+ 


511.36 


+228.72 


14.46 


14.98 


26523.110 


0.3894022 


82 


+ 


499.94 


+ 126.98 


14.43 


14.96 


26463 . 452 


. 3358520 


83 


+ 


226.09 


+424.66 


14.43 


15.00 


26471.427 


0.3566071 


84 


-: 


[202.81 


- 74.70 


14.09 


14.90 


26472.382 


0.5798722 


85 


-] 


1010.51 


+307.98 


14.23 


15.09 


26523.243 


0.7427555 


86 


+ 


293.14 


+ 147.26 


13.96 


15.18 


26470.383 


0.6478442 


87 


+ 


113.68 


+ 184.13 


14.40 


14.90 


26454.448 


0.3965019 


88 


+ 


98.13 


+203.28 


14.01 


14.81 


26523 . 273 


0.6901992 


89 


— 


2.95 


+ 159.29 


14.47 


14.97 


26523.329 


0.3748505 


90 


— 


5.30 


+ 137.09 


13.81 


14.73 


26460.432 


0.6034020 


91 


+ 


43.72 


+ 144.35 


14.25 


14.91 


26459.480 


0.8951422 


92 


— 


317.86 


+446.38 


14.10 


14.58 


26473.345 


1.3450659 


93 








not var. 






94 


— 


504.09 


+355.09 


14.64 


14.95 


26463.416 


0.2539318 


95 


— 


824.80 


- 11.05 


14.49 


14.98 


26473.448 


0.4049213 


96 


— 


71.20 


+ 97.06 


13.93 


14.82 


26455.467 


0.6245312 


97 


+ 


225.50 


+ 187.93 


14.11 


15.16 


26523.234 


0.6918869 


98 


+ 


198.25 


+ 102.38 


14.57 


15.09 


26524.265 


0.2805657 


99 


+ 


160.35 


+ 50.36 


13.77 


14.90 


26472.390 


0.7660839 


100 


+ 


179.49 


+ 65.68 


14.05 


15.05 


26434.489 


0.5527119 


101 


+ 


444.11 


- 73.28 


14.50 


14.94 


26523.291 


0.3408843 


102 


+ 


361.83 


- 94.10 


14.16 


15.22 


26468.445 


0.6913841 


103 


+ 


283.14 


+ 2.35 


14.46 


14.80 


26456.354 


0.3288461 


104 


+ 


822.98 


-309.01 


14.54 


14.95 


26471.370 


0.8678506 


105 


+ 


603.23 


-246.92 


14.57 


15.12 


26524.300 


0.3353375 


106 


+ 


130.35 


+ 26.92 


13.88 


15.02 


26523 . 189 


0.5699074 


107 


+ 


279.83 


-139.13 


14.07 


15.39 


26466.424 


0.5141010 


108 


+ 


185.66 


- 46.36 


13.84 


14.81 


26472.360 


0.5944533 


109 


+ 


153.91 


- 57.13 


13.99 


15.03 


26469.395 


0.7440653 


110 


+ 


158.94 


- 87.08 


14.41 


14.96 


26524.256 


0.3221021 


111 


+ 


27.26 


- 0.30 


14.18 


14.80 


26438.498 


0.7628923 


112 


+ 


79.83 


-103.36 


13.92 


14.92 


26470.380 


0.4743558 


113 


+ 


99.99 


-187.65 


13.94 


15.22 


26523 . 244 


0.5733636 


114 


+ 


38.08 


-101.15 


14.00 


14.75 


26470.416 


0.6753065 


115 


— 


345.49 


-336.14 


14.03 


15.21 


26467.406 


0.6304590 


116 


— 


109.66 


+ 33.71 


14.12 


14.77 


26472.437 


0.7201327 


117 


— 


267.73 


- 40.22 


14.40 


14.92 


26456.506 


0.4216653 


118 


— 


58.87 


- 98.67 


13.88 


15.02 


26473 . 380 


0.6116200 


119 


— 


82.04 


-157.45 


14.51 


14.83 


26472.319 


0.3058774 


120 


— 


211.29 


-247.61 


14.26 


15.23 


26523 . 264 


0.5485722 


121 


— 


184.36 


-189.58 


14 48 


14.81 


26524.259 


0.3041814 



58 



NGC 5139 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




122 


- 162.92 


-261.41 


13.99 


15.17 


26437.512 


0. 6349307f 


123 


+ 46.11 


-512.55 


14.41 


14.90 


26473.331 


0.4739051 


124 


+ 78.88 


-626.81 


14.37 


14.97 


26524.107 


0.3318614 


125 


+ 23.74 


-742.59 


13.87 


15.29 


26471.408 


0.5928902 


126 


+ 822.95 


-730.44 


14.45 


14.97 


26453.493 


0.3418933 


127 


- 880.16 


+ 4.31 


14.54 


14.92 


26524.177 


0.3052752 


128 


- 289.77 


- 92.09 


14.25 


14.86 


26469.401 


0.8349748 


129 


+ 192.02 


- 25.83 


14.18 


14.74 




irr.? 


130 


- 366.17 


+900.99 


14.30 


15.40 


irr. 


0.4932377 


131 


- 165.05 


- 59.95 


14.40 


14.86 


26523.329 


0.3921392 


132 


- 72.44 


- 29.31 


13.97 


14.96 


26469.386 


0.6556410 


133 


-1914.22 


+ 1053.78 


13.74 


14.53 


26473.334 


0.31709628 W UMa 


134 


- 942.87 


+972.72 


13.93 


15.20 


26466.386 


0.6529039 


135 


- 184.88 


- 37.25 


13.87 


14.85 


26470.314 


0.6325795 


136 


- 154.26 


+ 60.08 


14.22 


14.64 


26472.409 


0.3919136 


137 


- 149.54 


+ 96.23 


14.38 


14.90 


26473.286 


0.3342134 


138 


- 111.12 


-187.55 


12.5 


13.6 




74.6 irr. 


139 


- 86.94 


+ 65.18 


14.00 


14.90 


26462.404 


0.6768666 


140 


- 42.65 


- 86.80 








short 


141 


- 55.47 


- 47.46 


14.05 


14.75 


irr. 


0.6975651 


142 


- 37.35 


- 2.56 


14.2 


14.8 




short 


143 


- 37.45 


+ 71.40 


14.24 


14.77 


26470.394 


0.8207020 


144 


- 33.28 


+ 22.44 


14.33 


14.81 


26454.329 


0.8353054 


145 


+ 49.07 


-148.51 


14.40 


14.87 


irr. 


0.37315f 


146 


+ 65.96 


- 48.03 


13.87 


14.77 


26469.386 


0.6331021 


147 


+ 298.70 


-151.04 


14.35 


14.80 


26473.333 


. 4226945 


148 


+ 299.20 


+ 44.21 


12.9 


13.8 




90: irr. 


149 


+ 477.33 


+894.18 


13.92 


15.13 


26523.256 


0.6827332 


150 


+ 543.18 


-442.23 


14.07 


14.94 


26462.387 


0.8991585 


151 


+ 1010.06 


+753.35 


14.42 


14.84 


26523.333 


0.4077805 


152 


+ 13.84 


- 48.83 


12.8 


13.7 




124: irr. 


153 


+ 34.46 


+ 136.32 


14.48 


14.88 


26524.176 


0.3864509 


154 


+ 169.59 


-113.20 


14.55 


14.72 


26524.165 


0.3223311 


155 


+ 75.25 


+237.31 


14.43 


14.88 


26473.344 


0.4139117 


156 


+ 15.06 


-191.94 


14.41 


14.83 


26468.432 


0.3591887 


157 


+ 1.77 


+ 82.58 


14.42 


14.79 


26523 . 370 


0.4064970 


158 


- 10.58 


-119.80 


14.32 


14.74 


26472.442 


0.3673350 


159 


-2039.94 


-891.45 


14.39 


14.96 


27565.332 


0.3431150 


160 


- 711.13 


+969.21 


14.46 


14.98 


26473.439 


0.3972932 


161 


- 96.81 


-129.27 


13.3 


13.8 




irr. 


162 


- 392.40 


-252.39 


12.9 


13.6 




irr. 


163 


- 575.24 


+499.91 


14.51 


14.78 


26472.451 


0.3132294 


164 


+ 152.75 


+478.38 


13.7 


14.0 




irr. prob. red 


165 


- 69.92 


+ 104.59 











Variable Stars in Globular Clusters 
Catalogue — Continued 



59 



NGC 5139 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period 



Remarks 



166 


- 2.89 


+ 144.71 


167 


- 352.63 


-321.43 


168 


- 543.66 


-201.42 



14.96 15.46 



0.3212933 



So many of the RR Lyrae variables in this cluster have been shown to be variable in period 
or form of light curve that this information cannot be included in the table. For further 
particulars see especially Martin, ref. 118, and Wright, ref. 136. 

fTwo periods given by Martin. 

Variables Nos. 28, 31, 37, 93 are said by Bailey to be not variable. 

Epochs of maximum from ref. D. 

Refs. 14, 17, 20, 31, 40, 62, 67, 90, 99, 113, 116, 118, 119, 129, 131, 136, 143, 162, 165. 
Plates in 20 and 118. 



NGC 5272 (Messier 3) a 13 h 39 m .9, 5 +28° 38' 



1 


— 


5.2 


-128.5 


14.80 


16.14 


15021.378 


0.5206324 


765 


2 


+ 


15.8 


+ 52.6 










894 


3 


+ 


57.9 


- 66.0 


14.91 


16.16 


15021 . 225 


0.558207 


none 


4 


— 


43.5 


- 8.8 


14.9 


16.0 






559 


5 


+ 


261.0 


- 22.3 


14.76 


16.09 


15021 . 239 


0.505894 


1357 


6 


— 


123.9 


+ 60.1 


14.75 


16.19 


15021.452 


0.5143207 


361 


7 


— 


4.8 


+ 87.2 


14.69 


16.25 


15021 . 064 


0.4974290 


775 


8 


— 


81.7 


- 23.4 


not var 








437 


9 


— 


291.4 


-207.8 


14.84 


16.22 


15021.111 


0.5415672 


226 


10 


+ 


153.6 


+ 138.0 


15.03 


16.17 


15021.270 


0.5695127 


1291 


11 


— 


152.6 


-209.7 


14.89 


16.22 


15021 . 131 


0.5078919 


321 


12 


— 


3.8 


-145.4 


15.35 


15.98 


15021.015 


0.3178890 


776 


13 


— 


26.0 


-137.5 


15.08 


16.14 


15021.323 


0.4830535 


644 


14 


— 


49.0 


-161.0 


15.01 


16.10 


15021 . 179 


0.6358993 


537 


15 


— 


90.8 


-273.2 


14.83 


16.24 


15021.299 


0.5300771 


411 


16 


— 


301.4 


- 93.1 


14.73 


16.24 


15021.418 


0.5115072 


221 


17 


+ 


142.4 


-440.4 


15.24 


16.37 


15021 . 265 


0.5761344 


none 


18 


+ 


97.6 


-295.3 


15.08 


16.34 


15021 . 142 


0.5163462 


1202 


19 


+ 


350 . 5 


-245.6 


15.64 


16.20 




0.631981 


1388 


20 


+ 


333.5 


-271.6 


14.74 


16.13 


15021.289 


0.4912607 


1380 


21 


+ 


346.9 


+ 17.9 


14.88 


16.29 


15021.171 


0.5157298 


1386 


22 


+ 


190.2 


- 10.7 


14.83 


16.25 


15021.200 


0.481466 


1320 


23 


— 


113.0 


+279.2 


14.79 


15.70 


15021.082 


0.5953756 


374 


24 


— 


147.6 


+ 10.4 


15.07 


16.09 


15021.563 


0.6633499 


328 


25 


— 


124.4 


- 31.4 


14.77 


16.23 


15021.089 


0.480048 


362 


26 


— 


177.4 


- 43.0 


14.89 


16.15 


15021 . 239 


0.5977479 


296 


27 


— 


110.2 


-102.8 


15.17 


16.21 


15021.566 


0.5790981 


379 


28 


— 


25.0 


-105.8 


15.03 


16.28 


24290 . 335 


0.470666 


656 


29 


— 


65.2 


- 73.6 










486 


30 


— 


36.5 


+ 58.0 


14.88 


16.19 


22760.635 


5120891 


593 



60 



NGG 5272 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magni 
Max. 


tudes 
Min. 


Epoch of 
Maximum 


Period 


Remarks 


31 


+ 33.1 


+ 65.1 


14.73 


16.25 


15021.542 


0.5807218 


982 


32 


+ 11.8 


+ 60.1 


14.86 


16.38 


15021 . 108 


0.4953526 


867 


33 


+ 70.5 


- 89.0 


15.01 


16.22 


15021.217 


0.5252255 


1126 


34 


+ 135.4 


+ 170.2 


14.89 


16.16 


15021.136 


0.5591078 


1265 


35 


- 107.3 


-278.2 


15.04 


16.24 


15021.032 


0.530608 


384 


36 


+ 172.0 


- 35.4 


14.86 


16.26 


15021.272 


0.5455861 


1308 


37 


- 236.7 


+ 164.7 


15.14 


16.02 


15021.248 


0.3266402 


253 


38 


- 203.0 


+ 127.7 


15.06 


16.26 


24290.304 


0.5580326 


279 


39 


- 243.6 


+ 121.4 


15.07 


16.17 


15021.073 


0.5870732 


249 


40 


- 271.2 


+ 112.4 


14.93 


16.18 


15021 . 609 


0.5515419 


234 


41 


- 93.3 


+ 54.0 


15.04 


16.21 


15021.441 


0.4850291 


407 


42 


- 78.6 


+ 41.0 


14.85 


16.27 


15021.515 


0.5902069 


445 


43 


+ 99.9 


+ 24.7 


14.86 


16.23 


15021 . 191 


0.5405023 


1207 


44 


+ 170.0 


+ 99.4 


14.75 


16.21 


15021.368 


0.506443 


1307 


45 


- 241.2 


-129.9 


14.93 


16.30 


15021.349 


0.5368966 


252 


46 


- 128.1 


- 51.5 


15.46 


16.24 


15021.264 


0.613367 


355 


47 


- 117.5 


- 73.2 


14.98 


16.20 


15021.459 


0.5410201 


366 


48 


+ 126.9 


-102.7 


15.16 


15.99 


15021.088 


0.6278087 


1253 


49 


+ 140.0 


-100.7 


15.19 


16.23 


15021.266 


0.5482222 


1268 


50 


+ 8.8 


-234.0 


15.15 


16.09 


15021.327 


0.513088 


840 


51 


+ 30.8 


-226.4 


15.08 


16.21 


15021.486 


0.5839856 


965 


52 


- 76.8 


+ 152.0 


14.99 


16.16 


15021.485 


0.516189 


451 


53 


- 7.4 


+ 122.8 


14.70 


16.13 


15021.006 


0.5048891 


759 


54 


- 32.6 


+ 106.4 


14.94 


16.22 


15021.193 


0.506493 


616 


55 


- 204.2 


+324.4 


14.85 


16.21 


15021.699 


0.5298114 


278 


56 


- 141.1 


+358.6 


15.20 


15.94 


22760.623 


0.3295969 


338 


57 


+ 155.2 


- 0.2 


14.97 


16.22 


15021.618 


0.5122311 


1292 


58 


- 86.2 


+ 46.2 


14.78 


16.16 


22760.621 


0.517101 


425 


59 


- 109.8 


-228.4 


15.22 


16.24 


15021.332 


0.5888026 


378 


60 


- 297.4 


-315.4 


15.20 


16.14 


15021.389 


0.7077216 


222 


61 


+ 190.2 


+363.0 


14.88 


16.20 


15021.076 


0.5209367 


1321 


62 


+ 90.2 


+417.0 


15.21 


16.10 


15021.331 


0.6524063 


1187 


63 


+ 37.2 


+341.9 


14.93 


16.14 


15021.094 


0.5704204 


999 


64 


+ 114.8 


+330.4 


15.05 


16.10 


15021.324 


0.6054592 


1234 


65 


+ 125.4 


+327.5 


14.74 


16.09 


15021.503 


0.6683397 


1250 


66 


- 101.4 


+ 121.4 


15.20 


16.01 


15021.323 


0.6201973 


396 


67 


- 131.4 


+ 123.0 


15.21 


16.12 


15021.411 


0.5683681 


351 


68 


+ 21.9 


+ 174.8 


14.8 


16.3 




0.355974 


922 


69 


+ 80.6 


+ 141.0 


15.09 


16.18 


15021 . 553 


0.5665806 


1164 


70 


+ 37.6 


+ 152.2 


15.12 


15.70 


15021.315 


0.486064 


1003 


71 


+ 160.6 


- 2.0 


15.12 


16.20 


15021 . 168 


0.5490517 


1298 


72 


+ 445.5 


- 2.2 


14.61 


16.37 


15021.327 


0.4560721 


1409 


73 


+ 438.5 


+ 62.2 


15.0 


16.0 






1406 


74 


+ 88.2 


+ 151.0 


14.87 


16.26 


15021.452 


0.4921415 


1181 


75 


+ 49.0 


+ 159.5 


15.23 


15.99 


15021.411 


0.3140813 


1057 


76 


- 14.4 


- 88.2 


14.72 


16.41 


15021 . 293 


0.5017529 


710 


77 


- 94.4 


+ 27.8 


14.85 


16.36 


15021.451 


0.4593422 


404 



Variable Stars in Globular Clusters 
Catalogue — Continued 



61 



NGC 5272 



No. 




x" 


y" 


Magni 
Max. 


tudes 
Min. 


Epoch of 
Maximum 


Period 


Remarks 


78 


+ 


47.5 


+ 66.4 


15.10 


16.13 


15021.249 


0.6119228 


1051 


79 


+ 


43.4 


+349.4 


14.81 


16.24 


15021 . 229 


0.4832979 


1041 


80 


+ 


416.8 


+284.6 


15.05 


16.27 


15021.433 


0.5385169 


1400 


81 


+ 


342.8 


+351.1 


14.67 


16.28 


15021.325 


0.5291108 


1384 


82 


— 


102.6 


-601.8 


14.92 


16.27 


15021.527 


0.5245027 


391 


83 


— 


441.6 


+ 113.4 


14.66 


16.25 


15021.046 


0.5012423 


181 


84 


+ 


64.0 


+ 165.2 


15.20 


16.14 


15021.248 


0.5957289 


1105 


85 


+ 


306.2 


+225.8 


15.00 


15.83 


22760.517 


0.355820 


1373 


86 


+ 


513.0 


-114.2 


15.31 


16.13 


15021.016 


0.2926615 


1422 


87 


+ 


110.6 


+ 60.2 


15.31 


15.91 


22760.535 


0.357480 


1222 


88 


— 


35.0 


- 70.2 


14.9 


16.0 


24290.324 


0.298519 


597 


89 


+ 


28.0 


-110.8 


14.86 


16.15 


15021.507 


0.5484778 


948 


90 


+ 


97.2 


-188.2 


14.80 


16.24 


15021.461 


0.5170344 


1201 


91 


— 


14.3 


-550.0 


15.05 


16.27 


15021 . 259 


0.5301710 


713 


92 


— 


29.0 


-408.4 


14.88 


16.23 


15021.083 


0.5035579 


623 


93 


— 


319.4 


-396.6 


15.30 


16.22 


15021 . 177 


0.6023041 


214 


94 


— 


488.4 


-224.6 


14.84 


16.21 


15021.118 


0.5236921 


173 


95 


— 


154.7 


+ 15.4 


13.73 


14.42 




103.19 


318 


96 


— 


164.2 


-234.0 


14.78 


16.13 


15021.019 


0.4994538 


305 


97 


— 


130.0 


-196.7 


15.53 


16.01 


15021 . 524 


0.334927 


353 


98 


+ 


132.4 


- 3.2 


not var. 






1259 


99 


+ 


201.8 


- 55.0 


14.8 


15.8 






1330 


100 


+ 


69.9 


+ 97.3 


15.3 


16.2 




0.618813 


1122 


101 


+ 


46.4 


+ 83.7 


15.50 


16.14 


15021 . 101 


0.643900 


1048 


102 


+ 


58.4 


+ 114.9 


15.2 


15.9 


variable? 




1090 


103 


+ 


58.1 


+ 120.4 


not vai 








none 


104 


— 


25.8 


+ 145.5 


14.74 


16.09 


15021.288 


0.5699246 


650 


105 


— 


20.9 


+ 191.6 


15.17 


15.66 


15021.315 


0.2877445 


679 


106 


— 


48.0 


+ 168.0 


15.17 


16.20 


15021.310 


0.5471636 


541 


107 


— 


75.8 


+335.0 


15.02 


15.99 


15021.443 


0.3090344 


455 


108 


~ 


219.0 


+310.9 


14.77 


16.21 


15021.083 


0.5196047 


264 


109 


— 


89.3 


+ 2.7 


14.86 


16.31 


15021.033 


0.5339259 


416 


110 


— 


99.4 


- 15.8 


15.02 


16.24 


15021.307 


0.6363700 


397 


111 


— 


92.7 


+ 21.9 


14.96 


16.18 


15021 . 402 


0.5101921 


409 


112 


— 


144.6 


-719.4 


not var 








333 


113 


+ 


199.8 


-689.8 


14.90 


16.43 


15021.241 


0.5130031 


1328 


114 


+ 


11.8 


+622.0 


15.08 


16.24 


15021.515 


0.5977254 


873 


115 


+ 


445.0 


+664.7 


14.69 


16.25 


15021.297 


0.5133533 


1410 


116 


— 


491.8 


+465.2 


14.80 


16.22 


15021.441 


0.5148090 


170 


117 


+ 


89.6 


-467.6 


15.26 


16.23 


15021 . 579 


0.6005122 


1184 


118 


+ 


144.4 


-292.2 


14.73 


16.28 


15021.272 


0.4993795 


1277 


119 


+ 


253.4 


+ 106.2 


14.73 


16.16 


15021.460 


0.5177510 


1353 


120 


— 


295.8 


+231.4 


15.36 


16.05 


15021.284 


0.6401377 


223 


121 


— 


43.6 


+ 56.1 


15.41 


16.25 


22760.550 


0.5351935 


561 


122 


— 


33.5 


- 46.4 


14.6 


16.1 




0.5017 


608 


123 


— 


259. 


-985. 


15.16 


16.75 


15021.395 


0.5454416 


244 


124 


— 


66.4 


-201.4 


15.3 


16.2 




0.752438 


479 



62 



NGC 5272 



Publications of the David Dunlap Observatory 
Catalog ue — Contin ued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 










Max. 


Min. 


Maximum 






125 


+ 


186.3 


-132.8 


15.41 


16.08 


15021.029 


0.3498210 


1317 


126 


— 


15.4 


- 146 . 4 


15.50 


16.03 


15021.208 


0.3484044 


700 


127 


+ 


95.6 


- 63.6 


not var 








1198 


128 


+ 


114.6 


+ 131.4 


15.07 


15.97 




0.2922661 


1231 


129 


— 


43.6 


+ 77.2 


15.2 


16.1 




0.305471 


560 


130 


+ 


4.2 


+ 84.6 


15.10 


16.13 


22760.347 


0.5688389 


818 


131 


— 


73.2 


+ 27.4 


15.18 


15.94 


15021.318 


0.2976902 


459 


132 


— 


53.6 


- 22.0 


15.3 


16.4 


24290.387 


0.3398479 


524 


133 


— 


58.6 


+ 43.5 


14.89 


15.96 


15021.482 


0.5507230 


503 


134 


— 


22.4 


+ 52.4 


14.9 


16.3 


24290.282 


0.6190 


669 


135 


— 


27.0 


+ 38.0 


15.0 


16.5 




0.56843 


636 


136 


— 


25.4 


+ 33.4 


15.6 


16.2 






643 


137 


+ 


53.0 


- 18.8 


14.9 


16.2 


15021 . 155 


0.575146 


1072 


138 


— 


263.6 


+ 41.9 


not vai 








238 


139 


+ 


34.5 


+ 28.0 


15.25 


16.12 


22760.465 


0.560004 


985 


140 


— 


15.7 


+ 108.9 


15.10 


15.88 


22760.216 


0.3331259 


708 


141 


-1497.5 


-249.9 


14.9 


16.4 




0.2695477 


48 


142 


— 


30 


- 59 


15.6 


16.6 


24290.397 


0.568627 


620 


143 


— 


34 


+ 16 


15.4 


16.4 


24290.337 


0.51111 


604 


144 


+ 


54 


-100 


14.8 


16.7 


24290.565 


0.59674 




145 


+ 


29 


+ 8 


14.9 


16.5 


24290.528 


0.514456 


944? 


146 


+ 


96 


- 59 


14.6 


16.5 


24290.563 


0.596740 


1193? 


147 


— 


21 


+ 46 


15.1 


16.3 


24290.005 


0.34644 


671 


148 


— 


7 


+ 37 


15.3 


16.4 


24290.170 


0.467246 


755 


149 


+ 


34 


+ 52 


14.7 


16.5 


24290.228 


0.54985 




150 


+ 


69 


+ 37 


14.8 


16.7 


24290.359 


0.52397 


1119 


151 


+ 


4 


- 40 


14.9 


16.3 


24290.191 


0.51705 




152 


+ 


77 


+ 50 


15.0 


16.3 


24290.355 


0.32641 


1151? 


153 


— 


38 


+ 60 


not var. 






585 


154 


+ 


2 


- 29 


12.9 


14.0 


24647: 


15.7677 


801 


155 


— 


64 


- 74 










486 


156 


— 


21 


- 42 


not var. 






678 


157 


— 


17 


+ 35 


14.2 


15.7 


24647.650: 


0.5283 


698 


158 


— 


16 


- 41 


15.2 


16.5 


24647.564: 


0.50809? 


703 


159 


— 


15 


+ 16 


14.9 


16.6 


24647.602: 


0.5337 


714 


160 


— 


9 


- 44 


14.9 


16.1 


24647.446 


0.64792 


742 


161 


+ 


17 


- 58 


15.4 


16.4 


24647.567: 


0.49874 


901 


162 


+ 


28 


- 32 


not var. 






950 


163 


— 


16 


- 32 


not var. 






702 


164 


+ 


21 


- 36 


15.3 


15.9 






909 


165 


+ 


73 


+ 20 


14.7 


16.5 


24647.544 


0.483638 




166 


— 


97 


- 8 


15.1 


16.2 






402 


167 


— 


78 


- 37 


15.4 


16.5 


24647.448 


0.69245 


447 


168 


— 


45 


+ 7 


14.9 


16.0 


24647.617 


0.3770 


553 


169 


— 


29 


- 35 


not var. 






627 



NGC 5272 



Variable Stars in Globular Clusters 
Catalogue — Continued 



63 



No. 



Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



170 


— 


28 


+ 32 


15.1 


16.1 


24647.716: 


0.43725 


633 


171 


— 


27 


+ 16 


15.0 


16.1 


24647.864 


0.4303 


638 


172 


— 


21 


+ 25 


14.9 


16.5 


24647.700 


0.59400 


677 


173 


— 


13 


+ 39 


15.2 


16.6 


24647.670: 


0.606990 




174 


— 


9 


- 34 


15.1 


16.1 


24647.710 


0.4082 


743 


175 


+ 


42 


+ 26 


14.9 


16.2 


24647.914 


0.60780 




176 


+ 


46 


+ 32 


14.8 


16.4 


24647.621 


0.55599 




177 


+ 


63 


- 29 


15.0 


16.3 


24647.953 


0.34835 


1102 


178 


+ 


79 


+ 46 


15.2 


16. 5 


24647.755 


0.26499 


1153 


179 


+ 


39 


-774 


not var 










180 


— 


19 


- 27 


not var 








676? 


181 


— 


30 


- 14 


not var 










182 


— 


19 


+ 60 


not var 










183 


+ 


29 


+ 7 


not var 








944? 


18-1 


— 


25 


- 14 


14.9 


16.4 


24647.841 


0.517 


645? 


185 


— 


15 


+ 32 


15.2 


16.1 






705? 


186 


+ 


12 


- 64 


15.1 


16.1 


24647.670 


0.675 




187 


— 


23 


+ 9 


14.9 


16.2 


24647.961 


0.3927 




18? 


— 


27 


+ 24 


15.0 


16.0 


24647.615: 


0.3677 


641? 


189 


— 


25 


- 21 


15.2 


16.0 


24647.964 


0.668 


654 


190 


— 


8 


+ 28 


14.8 


16.5 


24647 . 936 


0.501 


749 


191 







+ 24 


15.1 


16.1 


24647.981 


0.512 


802 


192 


— 


2 


+ 3 


15.0 


16.1 


24647.933: 


0.525 


783 


193 


+ 


15 


— 7 


14.8 


16.3 


24647.777 


0.630 


881 


194 


+ 


17 


- 13 


15.1 


16.4 


24647.758 


0.549 


892 


195 


— 


13 


- 29 


15.0 


16.2 


24647.470: 


0.600 


720 


196 


+ 


47 


+ 1 










1052 


197 


+ 


58 


+ 10 


15.1 


16.5 


24647.689 


. 500075 


1092 


198 


— 


23 


+ 15 


15.2 


16.0 


24647.923: 


0.3017 


666 


199 


— 


19 


+ 13 


14.8 


16.3 


24647.699: 


0.488 




200 


— 


4 


+ 21 










769 


201 


+ 


4 


- 9 










none 


202 


— 


379.7 


+ 101 


15.4 


15.8 






190 


203 


— 


30.2 


-308 


15.56 


15.72 




0.28719 


632 


204 


— 


106.4 


- 18 


15.76 


15.93 




0.9170 


390 



Refs. 1, 8, 10, 11, 14, 17, 19, 20, 22, 25, 28, 31, 32, 38, 40, 43, 45, 50, 55, 56, OOi. 61, 76, 
80a, 84, 86, 98, 101, 105, 109, 110, 111, 115, 130, 135, 141, 144, 165, 179, M. Plates in 20, 25. 

Sandage and Roberts (ref. M) strongly suspect v.Z. 329 is variable with small amplitude, 
0.15, and hope other observers will try to corroborate this. 

Just as for NGC 5139, most of the variables have been shown to have period changes, see 
especially Martin, ref. 144 and Hett, ref. 141. These cannot be included in the table. The value 
given for the period is usually from the latest work on the star. 

The data for this cluster have been combined from many sources as follows: Positions: 
Nos. 1-137 Bailey, 138-141 Larink, 142-183 Miiller, 184-199 Greenstein, 200-201 Shapley. 
Magnitudes from Greenstein. Epochs: 1-153 from Miiller, 154-199 Greenstein, data on No. 
202 from Schwarzschild, Nos. 203 and 204 from Sandage, with von Zeipel's positions. 



64 



Publications of the David Dunlap Observatory 



Catalogue — Continued 
NGC 5272 

In a further attempt to clear up some of the confusion of identification of the variables in 
this cluster (discussed in detail in the last catalogue), I have identified as far as possible the 
variables with the numbers in von Zeipel's catalogue {Ann. t'Obs. Imp. Paris, Mem., v. 25, 
F 1-101, 1908). In cases where the variable is definitely not in the catalogue, this is indicated 
by "none" in the number column. Where no satisfactory identification has been made, a 
blank is left; and the number is questioned if doubt exists. 

There is doubt as to whether vars. 145 and 183 correspond to v.Z. 944 or 961. Shapley's 
Variable 18 is definitely v.Z. 944; but it is not certain whether his Var. 18 is the same as either 
145 or 183. 

NGC 5286 a 13 h 43 m .O, 5 -51° 07' 
No variables found. Ref. 71. No map. 

NGC 5466 a 14 h 03 m .2, 5 +28° 46' 



No. 


x" 


y" 


Magn 
Max. 


itudes 
Min. 


Epoch of 
Maximum 


Period 


Remarks 


1 


+858 


- 95 


15.6 


16.7 


30553.674 


0.577415 




2 


- 62 


-110 


15.5 


16.6 


30554.720 


0.588523 


64 


3 


- 31 


- 8 


15.4 


16.7 


30550.623 


0.578065 


95 


4 


- 80 


+ 9 


15.5 


16.6 


30556.602 


0.337968 


56 


5 


- 64 


+ 112 


15.7 


16.7 


30519.697 


0.380519 


61 


6 


+ 122 


- 24 


15.2 


16.6 


29786 . 653 


0.62096 


202 


7 


-210 


-225 


15.7 


16.7 


30519.697 


0.703423 


20 


8 


+ 23 


- 6 


15.8 


16.7 


30520.617 


0.629120 


141 


9 


+ 31 


+ 15 


15.5 


16.7 


30170.656 


0.685027 


148 


10 


+ 85 


+ 46 


15.8 


16.7 


30519.697 


0.709273 


186 


11 


+ 117 


+ 68 


15.7 


16.7 


30884.625 


0.37799 


198 


12 


+ 17 


- 88 


16.0 


16.5 


30880.665 


0.2942387 


134 


13 


- 49 


- 73 


16.0 


16.7 


30556.702 


0.341557 


83 


14 


- 47 


+ 52 


15.8 


16.5 


30880.599 


0.440041 


84 


15 


+223 


+ 20 


15.9 


16.5 


30519.618 


0.28672 


227 


16 


-149 


-175 


16.0 


16.5 


30553.612 


0.29667 


37 


17 


- 60 


- 30 


15.9 


16.4 


30519.713 


0.370117 


68 


18 


+ 44 


+ 41 


16.0 


16.7 


30519.697 


0.37406 


166 



No. is from Hopmann's Catalogue, A.N., v. 229, p. 209, 1927. 
Refs. 78, 79, 157. Prints in 78, 157. 



NGC 5634 


a 14 h 27 m .0, 


5 -05° 45' 






1 


- 56.5 


- 19.5 


16.41 


17.39 


2 


- 25.4 


+ 83.1 


16.19 


17.38 


3 


- 45.1 


+ 41.9 


16.48 


17.47 


4 


+ 54.2 


- 65.2 


16.55 


17.39 


5 


- 11.6 


-162.9 


16.72: 


17.19 


6 


+ 43.4 


- 52.6 


16.69 


17.05 


7 


- 0.4 


- 4.0 







0.65872 



Ref. 156, with plate. 



Variable Stars in Globular Clusters 

Catalogue — Continued 

NGC 5694 a 14 h 36 m .7, 5 -26° 19' 
No variables found. Ref. 104. No map. 



65 



Baade's Cluster a 15 h 13 m .5, 6 +0° 4' 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period Remarks 



1 


- 97 


+ 25 


16.80 


17.55 


2 


- 85 


-246 


16.90 


17.60 


3 


+ 143 


-166 


16.95 


17.50 


4 


+ 35 


-238 


16.90 


17.60 


5 


- 84 


+ 94 


17.05 


17.50 


5 suspected variables. 








Ref. 176 


with print. 








NGC 5897 


a 15 h 14 m .5, 


5 -20° 50' 






1 


-109 


-201 


15.8 


16.5 


2 


- 57 


- 97 


15.8 


16.4 


3 


- 40 


- 4 


15.8 


16.5 


4 


+ 71 


+ 20 


15.5 


15.9 



Ref. 187 with plate. 



NGC 5904 (Messier 5) a 15 h 16 m .O, 5 +02° 16' 



1 


+ 27.7 


+ 161.1 


14.31 


15.41 


27563.794 


0.52178673 


2 


-343.5 


- 31.5 


14.74 


15.60 


27601.700 


0.526 


3 


+ 160.1 


+ 113.7 


14.64 


15.33 


27567 . 842 


0.60018398 


4 


- 12.3 


+ 73.8 


14.65 


15.89 


27627.708 


0.44963886 


5 


- 7.8 


+ 51.6 


14.83 


16.06 


27567.929 


0.545903 


6 


+ 27.2 


- 46.6 


14.55 


15.61 


27567.856 


0.54883108 


7 


- 5.1 


-191.3 


14.42 


15.57 


27601 . 730 


0.49439008 


8 


+ 134.0 


-133.2 


14.55 


15.58 


27605.697 


0.54622519 


9 


+ 195.0 


+ 88.0 


14.68 


15.50 


27563.855 


0.6988956 


10 


+ 107.4 


+382.0 


14.43 


15.77 


27567.825 


0.53066335 


11 


-154.5 


+ 84.5 


14.43 


15.58 


27563.817 


0.59589173 


12 


-175.5 


- 17.3 


14.40 


15.73 


27601.762 


0.46771968 


13 


+ 11.0 


- 65.4 


14.75 


15.64 


27567.800 


0.5131237 


14 


-145.6 


+ 103.7 


14.28: 


15.34: 


27567.974 


0.4872433 


15 


+ 192.0 


+ 3.6 


14.84 


15.32 


27567.908 


0.33676094 


16 


+ 91.0 


+ 83.9 


14.29 


15.53 


27567.781 


0.64762455 


17 


- 26.1 


+ 44.3 


14.80 


15.91 


27567 . 723 


0.601354 


18 


+ 151.7 


-107.7 


14.83 


15.39 


27567.773 


0.464 


19 


+233.7 


-129.9 


14.11 


15.68 


27601 . 706 


0.46995413 


20 


-255.5 


- 25.0 


14.50 


15.29 


27601 . 729 


0.6094760 


21 


+322.6 


+ 74.0 


14.46 


15.52 


27605.684 


0.6048946 


22 


-205.7 


+383.5 


not var 








23 


-253.4 


- 10.9 


not var 









66 



NGC 5904 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




24 


- 46.8 


- 71.7 


14.77 


15.65 


27567.821 


. 47837785 


25 


- 28.9 


-128.0 


13.83 


14.73 


27567.766 


short 


26 


+ 21.8 


+ 101.5 


14.42 


15.46 


27601 . 761 


0.6225647 


27 


- 6.7 


- 59.2 


14.37 


15.74 


27888.894 


0.4703 


28 


+ 132.2 


-121.1 


14.50 


15.68 


27540.882 


. 54394489 


29 


-374.7 


- 76.6 


14.56 


15.52 


27567.700 


0.4514 


30 


4- 22.8 


-212.8 


14.80 


15.49 


27567.761 


0.5921760 


31 


+ 151.7 


-141.7 


14.79 


15.36 


27567 . 872 


0.30058294 


32 


+201 . 9 


-150.6 


13.98 


15.50 


27605.754 


0.45778653 


33 


- 21.1 


+ 127.5 


14.24 


15.55 


27601 . 738 


0.50147264 


34 


+ 84.3 


+ 59.5 


14.65 


15.52 


27567.727 


0.56814350 


35 


- 12.2 


-114.7 


14.68 


15.16 


27567.866 


0.30811974 


36 


- 8.4 


- 52.2 


14.96 


15.91 


27563.868 


0.6277 


37 


+ 44.7 


- 67.0 


14.49 


15.60 


27605.762 


0.48879470 


38 


- 44.2 


+ 117.2 


14.49 


15.90 


27889.937 


0.47042783 


39 


-125.3 


-205.2 


14.23 


15.61 


27563.832 


0.5890352 


40 


+ 124.8 


+ 113.5 


14.83 


15.26 


27605.698 


0.31732857 


41 


+ 19.3 


+231.4 


14.23 


15.64 


27567.879 


0.48857528 


42 


-123.2 


-120.8 


11.20 


12.24 


27567.8 


25.738 Sp. 


43 


-201.8 


+ 154.3 


14.82 


15.48 


27601 . 767 


0.6602275 


44 


-102.5 


+ 31.1 


14.97 


15.33 


27601 . 732 


0.247? 


45 


-116.7 


+ 65.7 


14.74 


15.90 


27567.774 


0.61663546 


46 


- 80.0 


+ 69.1 


not var 








47 


- 75.3 


+ 58.1 


14.84 


15.96 


27563.861 


0.5397300 


48 


- 62.5 


+ 106.3 


not vai 








49 


+ 52.7 


+ 177.5 


not vai 








50 


+ 38.0 


+ 109.1 


14.00: 


14.54: 




irr.? Sp. 


51 


+ 0.3 


+ 135.5 


var? 








52 


+ 107.9 


+ 35.3 


14.49 


15.57 


27563 . 804 


0.50178498 


53 


+ 68.9 


+ 19.2 


14.98 


15.28 


27601.70 


0.37360 


54 


+ 30.3 


+ 57.2 


14.62 


15.68 


27567.721 


0.45410915 


55 


+ 80.1 


-163.2 


14.87 


15.26 


27601 . 734 


0.32889680 


56 


- 68.9 


+ 96.5 


14.75 


15.86 


27889.931 


. 53469099 


57 


- 30.6 


+ 99.7 


14.94 


15.43 


27567 . 897 


0.28467869 


58 


- 605.1 


+ 168.2 


14.63 


15.65 


27601.716 


0.491266 


59 


- 150.0 


- 35.5 


14.42 


15.33 


27540.936 


0.54202572 


60 


- 109.7 


+ 8.2 


15.04 


15.74 


27567 . 75 


0.285218? 


61 


- 254.9 


- 31.4 


14.63 


15.60 


27567.826 


0.56861702 


62 


+ 166.8 


-216.8 


14.73 


15.40 


27601.704 


0.281409 


63 


+ 212.9 


+ 51.8 


14.25 


15.57 


27567.851 


0.49767716 


64 


- 51.2 


-248.9 


14.54 


15.64 


27540.853 


0.5445076 


65 


- 159.9 


- 93.8 


14.28 


15.60 


27628.729 


0.48065810 


66 


+ 218.3 


+406.8 


14.81 


15.36 


27567.813 


0.35068 


67 


-1028.2 


- 59.8 


14.83 


15.30 


27567 . 733 


0.349046 



Variable Stars in Globular Clusters 
Catalogue — Continued 



Q>\ 



NGC 5904 














■ 


No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 










Max. 


Min. 


Maximum 




68 


+ 


897.5 


+ 47.6 


14.80 


15.33 


27628.727 


0.3342771 


69 


+ 


653.3 


+ 751.6 


14.80 


15.72 


27567.761 


0.494S7432 


70 


+ 


393 . 8 


+620.4 


14.55 


15.63 


27567 . 930 


0.5585282 


71 


+ 


664.1 


+290.3 


14.45 


15.70 


27541.011 


0.5024681 


72 


+ 


689.7 


+ 38.3 


14.53 


15.57 


27596 . 82 


0.562 


73 


+ 


17.3 


+604.7 


14.63 


15.31 


27601 . 753 


0.34011278 


74 


+ 


202.8 


+ 162.8 


14.18 


15.46 


27626.684 


0.45399611 


75 


+ 


78.6 


-412.8 


14.66 


15.42 


27596.816 


0.6854141 


76 


+ 


80.5 


-309.2 


14.73 


15.18 


27563.813 


0.4324211 


77 


— 


171.5 


-184.8 


14.68 


15.42 


27605.721 


0.8451134 


78 


+ 


65.5 


+ 159.7 


14.86 


15.28 


27567.727 


0.26481742 


79 


— 


133.5 


- 32.2 


14.95 


15.51 


27567.884 


0.33313840 


80 


— 


48.6 


+ 111.6 


15.05 


15.54 


27562.986 


0.33654242 


81 


— 


72.2 


-121.7 


14.62 


15.54 


27567.972 


0.5573241 


82 


— 


67.8 


+ 12.4 


14.86 


15.72 


27563 . 798 


. 5584455 


83 


— 


84.7 


- 87.8 


14.80 


15.66 


27567 . 783 


0.5533080 


84 


+ 


43.7 


- 31.9 


11.54 


12.61 


27602 


26.5 Sp. 


85 


+ 


38.3 


- 34.4 


14.80 


15.70 


27567.970 


0.52741 


86 


+ 


34.6 


- 33.0 


14.50 


15.83 


27567.856 


0.56733 


87 


+ 


122.0 


- 1.8 


14.84 


15.21 


27540.914 


. 7383875 


88 


+ 


65.2 


+ 61.8 


15.08 


15.48 


27563 . 832 


0.32808270 


89 


+ 


60.0 


+ 64.7 


14.79 


15.69 


27626.707 


0.55844189 


90 


— 


44.7 


+ 15.3 


14.67 


15.88 


27540.828 


0.5571534 


91 


— 


36.0 


+ 35.0 


15.04 


15.96 


27567.927 


0.584944 


92 


— 


56.6 


-123.5 


14.28 


15.58 


27567.963 


0.46358 


93 


+ 


44.0 


- 35.7 


14.54 


15.81 


27567.771 


0.55231 


94 


— 


23.5 


+ 17.4 


15.26 


16.11 


27601 . 728 


0.53141 


95 


— 


47.2 


+ 102.8 


15.13 


15.80 


27626.689 


0.29082 


96 


— 


12.4 


+ 32.9 


14.96 


16.15 


27563 . 778 


0.51225 


97 


+ 


48.9 


- 92.5 


14.18 


15.61 


27601 . 754 


0.54466 


98 


+ 


37.3 


+ 20.0 


15.26 


15.71 


27605.737 


0.30639 


99 


+ 


34.4 


- 0.1 


15.32 


15.89 


27567.739 


0.32134 


100 


+ 


2.8 


+ 48.7 


15 . 30 


16.01 


27628.710 


0.2943 1 


101 


— 


281.6 


+ 36.0 


17.15 






SS Cyg? 


102 


+ 


14.8 


- 14.8 








prob. RR Lyr 


103 


+ 


20.5 


- 8.8 








prob. RR Lyr 



Kpochs from ref. K, unpublished. 

Refs. 2, 3, 4, 5, 6, 7, 11, 12, 14, 15, 17, 20, 24, 26, 31, 33, 40. 42, 53, 54, 60, 82, 137. 165, K. 
I lates in 20, 33, 137. 



NGC 5986 a 15»' 42">.S, 5 -37° 37' 

1 variable at a radial distance of 1'.7 from centre. 
Refs. 14, 20. No map. 



68 Publications of the David Dunlap Observatory 

Catalogue — Continued 
NGC 6093 (Messier 80) a 16 h 14 m .l, 5 -22° 52' 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 








Max. 


Min. 


Maximum 


i 




1 


-137 


+ 49 


13.1 


14.5 


29406.8 


15.70 


Sp. 


2 


+ 22 


- 19 


14.7 


15.3 








3 


+ 104 


+ 56 


15.6 


16.3 






short per. 


4 


- 85 


+ 61 


15.6 


16.2 






short per. 


5 


+ 14 


- 67 


15.7 


16.2 






short per. 


6 


+520 


+296 


9.3 


15.8 


32036 


177.13 


S Sco 


7 


+502 


+ 112 


9.5 


15.5 


32142 


222.53 


RSco 


Nova 


+ 4.0 


+ 2.7 


6.8 




00551 




T Sco 



A suspected variable near this cluster is No. 101570 in Russian "Catalogue of Stars Probably 
Variable," 1951. 

Refs. 20, 69, 122, 148, 165. Plates in 20, 148. Ref. 122 gives bibliography of nova. 



NGC 6121 (Messier 4) a 16 h 20 m .6, 5 -26° 24' 



1 




281 


+ 42 


13.46 


13.97 


29706.315 


0.288872 


2 




248 


-195 


13.05 


14.10 


29676.448 


0.5356817 


3 




208 


-507 


12.92 


14.08 


29723.221 


0.506651 


4 




185 


-340 


11.0 


12.5 




semireg. Sp. 


5 




185 


- 93 


13.57 


13.99 


29522.035 


0.622401 


6 




115 


+318 


13.54 


14.09 


29705.377 


0.320504 


7 




113 


+231 


12.99 


14.28 


29748.231 


0.4987743 


8 




110 


+ 111 


12.88 


14.22 


29676.458 


0.5081753 


9 




104 


+ 105 


12.75 


14.16 


29676.332 


0.5718921 


10 




• 68 


+ 159 


12.68 


14.18 


29717.391 


0.4907161 


11 




■ 64 


-297 


13.32 


14.14 


29496.021 


0.4930763 


12 




53 


-207 


13.04 


14.38 


29676.323 


0.4461309 


13 




47 


+270 


12.37 


13.08 




Sp. 


14 


— 


47 


-244 


12.96 


14.40 


29717.295 


0.4635292 


15 


— 


32 


+436 


12.98 


14.25 


29496.035 


0.4437854 


16 


— 


29 


+ 69 


13.05 


14.18 


29705.381 


0.5425452 


17 


— 


8 


+ 20 


13.40 


13.74 


29708.319 


0.855469 


18 


+ 


4 


+ 27 


12.84 


14.20 


29676.446 


0.4787915 


19 


+ 


11 


+358 


12.76 


14.18 


29511.075 


0.4678119 


20 


+ 


13 


- 63 


13.24 


13.60 


29676.381 


0.3094164 


21 


+ 


19 


- 4 


12.73 


14.10 


29705.436 


0.471986 


22 


+ 


34 


+ 80 


13.40 


13.98 


29676.410 


0.6030634 


23 


+ 


38 


- 26 


13.26 


13.77 


29676.389 


0.2985478 


24 


+ 


49 


+ 48 


13.12 


14.06 


29676.450 


0.5467733 


25 


+ 


70 


+ 70 


13.08 


14.08 


29723.276 


0.6127352 


26 


+ 


94 


- 72 


12.80 


14.14 


29538.993 


0.5412200 


27 


+ 


118 


+255 


12.90 


14.09 


29723.260 


0.6120184 


28 


+ 


259 


+ 84 


12.60 


14.02 


29676.411 


0.522322 


29 


+ 


326 


+598 


12.88 


14.02 


29705.367 


0.5224857 


30 


+ 


340 


- 69 


13.29 


13.87 


29676 . 458 


0.2697501 


31 


+ 


353 


+ 45 


12.72 


14.03 


29676 . 272 


0.5053135 






Variable Stars in Globular Clusters 



69 



NGC 6121 



Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




32 


+ 746 


- 40 


12.98 


13.96 


29705 . 446 


0.579109 


33 


+ 805 


+630 


12.70 


13.96 


29676 . 340 


0.6148277 


34 


- 820 


+416 


13.16 


14.36 


29723.338 


0.554843 


35 


- 377 


+ 62 


13.44 


14.15 


29705.441 


0.627042 


36 


- 208 


-259 


13.26 


14.18 


29676.370 


0.541310 


37 


- 39 


+ 2 


13.46 


13.76 


29522.064 


. 247352 


38 


- 23 


- 92 


13.38 


14.09 


29496.053 


0.577848 


39 


+ 1 


- 80 


13 . 62 


14.06 


29676.463 


. 623980 


40 


+ 25 


+ 49 








0.40151 


41 


+ 65 


-150 


13.53 


13.97 


29676.402 


0.2517311 


42 


+ 377 


+558 


13.33 


13.78 


29526.164 


0.303708 


43 


+ 1263 


+332 


12.92 


13.48 


29748.245 


0.320637 



Refs. 21, 90, 93, 126, 138, 145, 161, 165. Plates in 90, 126. 



NGC 6144 « 16 h 24 m .2, 8 -25° 56' 



1 



+481 



117 



15.3 



16.3 



Ref. 187. 



NGC 6171 a 16 h 29 m .7, 5 -12° 57' 



1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 



- 112.8 
+ 148.8 

- 224.4 

- 99.6 
+ 231.0 

- 10.8 



+ 
+ 



+ 
+ 

+ 
+ 



+ 



42.0 
12.0 
26.4 
57.0 
9.6 
58.8 
27.0 
17.4 
19.2 
67.2 
99.0 
77.4 



+ 232.8 



+ 
+ 



31.2 

81.0 

-1354.2 

- 263.4 

0.0 



-522.0 
-388.8 
-183.6 
-156.6 
-161.4 

- 67.2 

- 61.2 

- 42.0 

- 19.8 
+ 8.4 
+ 33.0 
+ 61.2 
+ 72.0 
+ 82.2 
+ 120.0 
+ 113.4 
+ 71.4 
+215.4 
+ 162.6 
+ 51.0 
-144.6 
-183.0 
+ 19.2 
+ 8.4 



114.16 
15.62 
15.55 
15.64 
15.74 
15.68 
15.57 
15.57 
15.91 
15.48 
15.69 
15.27 
15.45 
15.35 
15.57 
15.69 
15.35 
15.75 
15.77 
15.66 
16.33 

15.61 
15.66 



[16.75 
16.29 
16.14 
16.14 
16.21 
16.15 
16.64 
16.52 
16.33 
16.65 
16.46 
16.48 
16.59 
16.45 
16.12 
16.51 
16.45 
16.46 
16.25 
16.40 
16.78 

16.13 
16.46 



long per. 



Ref. 121, with chart. 



70 Publications of the David Dunlap Observatory 

Catalogue — Continued 
NGC 6205 (Messier 13) a 16 h 39 m .9, 5 +36° 33' 



No. 



Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



1 


+ 73.06 


— 


24.86 


13.2 


15.0 


27685.763 


1 . 45899 


816, Sp. 


2 


- 54.10 


— 


3.04 


12.6 


14.1 


27308.868 


5.11003 


306, Sp. 


3 


-127.70 


+ 


16.52 


15.58 


15.79 


prob. 


not var. 


135 


4 


- 47.34 


+ 


58.18 


15.04 


15.23 


prob. 


not var. 


322 


5 


+ 71.62 


— 


14.06 


14.33 


14.94 


24313.429 


0.298? 


806/3 


6 


+ 92.68 


+ 


76.60 


13.5 


14.8 


27274.867 


2.11283 


872, Sp. 


7 


- 39.78 


— 


82.72 


14.72 


15.17 


24313.102 


0.24? 


344 


8 


- 93.02 


+ 


11.29 


14.2 


15.6 


28038.654 


0.750306 


206 


9 


+ 71.62 


— 


14.06 


14.0 


15.1 




short? 


806a 


10 


- 5.40 


— 


70.73 


13.1 


14.0 




semireg. 


487, Sp. 


11 


- 45.78 


— 


75.88 


12.9 


13.8 




92.5 


324, Sp. 


12 


-105.88 


+ 


53.46 


15.0 


15.35 


prob. 


not var. 


187 


13 


- 45.37 


— 


31.30 


14.26 


14.50 


prob. 


not var. 


327 


14 


+ 3.18 


+207.64 


16.16 


16.45 


prob. 


not var. 


527 


15 


+ 79.03 


~ 


115.34 


13.32 


13.67 




irreg. 


835 



Var. No. 15 and period for No. 11, found by Arp, unpublished, ref. H. Numbers in right- 
hand column are identification in Ludendorff's Catalogue, Potsdam Pub., v. 15, no. 50, 1905. 
Kollnig-Schattschneider's No. 5, for which the Ludendorff no. was erroneously given as 200, 
is the same as No. 8 above. 

Variability of Nos. 3, 4, 12, 13, 14 questioned by Arp and Sawyer from unpublished material. 

Refs. 18, 20, 23, 27, 29, 30, 37, 40, 76, 133, 134, 142, 147, 165. Plates in 20, 134. 

NGC 6218 (Messier 12) a 16 h 44 m .6, 8 -01° 52' 



1 



+34 



-62 



11.9 



13.2 27306.708 15.508 



Sp. 



Refs. 11, 102, 113, 123, 124, 165. Plate in 123. 



NGC 6229 a 16 h 45 m .6, 5 +47° 37' 



1 


- 24.6 




105.5 


16.84 


17.90 


2 


- 71.9 


+ 


4.9 


17.18 


17.93 


3 


-195.7 


+ 


41.3 


17.21 


17.82 


4 


- 56.8 


— 


14.3 


17.36: 


17.89 


5 


+ 14.5 


+ 


44.1 


17.21 


17.95 


6 


+ 44.1 


+ 


41.5 


17.28: 


17.96 


7 


- 41.7 


— 


49.9 


16.84 


18.01 


8 


- 4.1 


— 


42.1 


15.30 


16.64 


9 


- 38.9 


+ 


38.3 


17.12: 


17.91 


10 


- 29.5 


+ 


72.7 


17.28 


17.99 


11 


+ 23.9 


— 


25.0 


J17.44 


18.01 


12 


+ 34.2 


— 


23.6 


17.12 


18.02 


13 


+ 140.2 


+ 


61.3 


17.15 


18.01 


14 


- 15.5 


— 


50.7 


16.88 


17.95 


15 


+ 34.2 


+ 


27.5 


17.39 


17.92 



l.per. Cep. 









NGC 6229 



Variable Stars in Globular Clusters 
Catalogue — Continued 



71 



No. 



Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



16 


+ 47.0 


- 24.2 


17.31 


17.94 


17 


- 96.3 


- 75.0 


17.08 


17.72 


18 


- 36.1 


+ 32.2 


17.34 


18.00 


19 


+ 53.4 


- 44.4 


16.96 


18.00 


20 


- 27.5 


- 36.1 


16.91 


18.05 


21 


+ 117.3 


- 61.6 


17.12 


17.94 


22 


+ 4 


— 7 


15.2 


16.3 



prob. slow 



Note: Var. No. 1 in 1939 catalogue is now No. 8. 
Refs. 36, 113, 156, 187. Plate in 156. 



NGC 6235 a 16 h 50 m .4, 5 -22° 06' 



1 


-16 


+ 39 


16.5 


17.2 


2 


+58 


-211 


16.5 


17.3 



Ref. 187 with plate. 



NGC 6254 (Messier 10) a 16 h 54 m .5, S -04° 02' 



1 


+ 5 


+ 22 


13.2 


13.8 






Sp. 


2 


+ 30 


+ 120 


11.9 


13.7 


26607.712 


18.754 


Sp. 


3 


-209 


+ 106 


13.10 


13.82 




7.87 





Var. No. 3 found by Arp, unpublished, ref. H. 
Refs. 14, 102, 113, 123, 124, 165. Plate in 123. 



NGC 6266 (Messier 62) a 16 h 58 m .l, 5 -30° 03' 



1 


+ 41.0 


+ 6.1 


2 


- 26.6 


- 68.9 


3 


- 89.2 


- 5.8 


4 


- 94.6 


- 39.6 


5 


-163.4 


+ 123.4 


6 


- 81.2 


+ 33.1 


7 


+ 22.6 


+ 169.1 


8 


- 94.6 


+ 163.4 


9 


- 92.7 


+ 214.0 


10 


-452.7 


+ 160.0 


11 


-456.2 


+ 128.3 


12 


-203.4 


+268.9 


13 


+ 1.6 


+ 30.2 


14 


- 92.2 


+264.7 


15 


+ 122.8 


+303.0 


16 


- 74.8 


+ 94.1 



72 Publications of the David Dunlap Observatory 

Catalogue — Continued 
NGC 6266 

No. x" y" Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



17 


- 21.4 


+ 102.7 


18 


- 33.4 


+ 91.4 


19 


- 15.3 


+ 65.2 


20 


+ 131.4 


+ 159.8 


21 


+ 105.4 


+ 80.6 


22 


+ 62.6 


+ 12.6 


23 


- 74.3 


- 37.4 


24 


+ 62.6 


- 39.0 


25 


+ 150.4 


- 73.4 


26 


-186.8 


-302.1 



Refs. 14, 20 with plate. 
NGC 6273 (Messier 19) a 16 h 59 m .5, 5 -26° IP 



1 +4 +48 14.1 15.1 

2 +14 +123 13.4 14.7 

3 -28 - 6 14.2 15.2 

4 - 2 - 24 15.1 15.7 



Ref. 152 with plate. 
NGC 6284 a 17 h 01 m .5, 5 -24° 41' 



1 


- 24 


+ 36 


15.6 


16.1 


2 


- 47 


- 17 


16.1 


17.0 


3 


- 28 


- 13 


15.3 


15.7 


4 


+ 22 


- 18 


15.4 


16.3 


5 


+ 109 


-205 


16.4 


17.0 


6 


+ 139 


+221 


15 9 


16.4 



Ref. 152 with plate. 
NGC 6287 a 17 h 02 m .l, 5 -22° 38' 



1 


-152 


-40 


16.2 


17.1 


2 


+ 46 


-26 


15.7 


15.9 


3 


+ 26 


+44 


16.1 


16.8 



Ref. 152 with plate. 
NGC 6293 a 17 h 07 m .l, 5 -26° 30' 



1 + 81.0 +49.5 15.9 16.6 

2 -135.6 +64.5 15.8 16.7 

3 + 48.6 +18.6 15.5 15.8 

4 +92 -81 16.1 17.1 

5 +78 -83 15.7 16.5 



Refs. 51 , 152 with plate. 



Variable Stars in Globular Clusters 

Catalogue — Continued 
NGC 6333 (Messier 9) a 17 h 16 m .2, 5 -18° 28' 



73 



No. 



Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



1 


+ 91 


- 76 


15.6 


16.9 


29427.886 


0.585727 


2 


+ 40 


- 31 


15.6 


16.4 


29436.854 


0.628191 


3 


+207 


-210 


15.7 


16.85 


32000.735 


0.605397 


4 


+ 23 


- 35 


15.8 


16.95 


30520.749 


0.670076 


5 


+ 34 


- 7 


16.0 


16.8 


29435.870 


0.274708 


6 


- 70 


- 14 


15.7 


16.95 


29435.870 


0.607795 


7 


-111 


- 80 


15.95 


17.2 


29434.860 


0.628456 


8 


- 73 


- 99 


16.05 


16.9 






9 


+334 


-191 


16.0 


16.75 


30933 . 704 


0.322990 


10 


+ 37 


+ 26 


16.2 


16.9 


30553.653 


0.242322 


11 


- 4 


- 7 


15.7 


16.8 






12 


-275 


-136 


15.85 


16.95 


29408.951 


0.571784 


13 


+259 


+ 11 


16.7 


17.8 


30554 . 694 


0.47985 



Ref. 32a, 87, 163, 177 with plate. 
NGC 6341 (Messier 92) a I7 h lo^, S +43° 12' 



1 


+ 127.5 


+ 41.3 


14.64 


15.53 


27340.211 


0.702807 


2 


+ 91.2 


+ 69.2 


14.50 


15.52 


27340.329 


0.643886 


3 


+ 53.7 


+252.7 


14.58 


15.70 


27340.344 


0.637494 


4 


- 76.0 


+ 58.0 


14.52 


15.43 


27340.111 


0.628911 


5 


+ 81.6 


- 53.7 


14.50 


15.51 


27340.302 


0.619707 


6 


+ 38.7 


+ 43.3 


14.53 


15.40 


27340.360 


0.600001 


7 


+ 1.6 


- 50.5 


14.14 


14.58 


27340.373 


0.515075 


8 


+208.9 


+208.0 


14.70 


15.79 


27430.366 


0.6735605 


9 


+ 18.0 


- 48.1 


14.75 


15.24 


27340.218 


0.61 


10 


+ 83.0 


+ 36.3 


14.79 


15.39 


27340.283 


0.377315 


11 


+ 71.2 


- 67.1 


14.74 


15.29 


27430.301 


0.3084416 


12 


- 29.9 


- 97.8 


14.80 


15.16 


27340.009 


0.4099586 


13 


+ 153.4 


- 60.1 


14.93 


15.08 






14 


-316.0 


+245.7 


14.80 


15.10 


27340.089 


0.346178 field, 

W UMa 


15 


+ 30 


-102 


14.6 


15.2 






16 


- 2 


+ 77 


14.0 


14.5 







Of 2 other stars suspected by Nassau as variables, his No. 15 is considered non-variable, 
No. 16 is still suspect, ref. 184. 

Refs. 64, 76, 114, 120, 125, 153, 184. Plates in 120, 184. 



NGC 6356 a 17 h 20 m .7, 5 -17° 46' 



1 


- 15 


- 24 


16.3 


17.2 


2 


+ 101 


-110 


16.8 


17.1 


3 


- 24 


+ 45 


16.0 


[17.5 


4 


+ 187 


+ 47 


15.9 


[17.5 


5 


-255 


+ 152 


15.7 


[17.5 



Ref. 187 with plate. 



74 



Publications of the David Dunlap Observatory 



NGC 6362 a 17 h 26 m .6, 5 



Catalogue — Continued 
-67° 01' 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period 



Remarks 



1 


00 


00 


2 


- 29 


-100 


3 


- 83 


- 89 


4 


- 79 


- 88 


5 


+ 81 


- 14 


6 


+ 54 


+ 175 


7 


+ 22 


+ 104 


8 


-263 


+ 108 


9 


-207 


+ 138 


10 


+ 186 


+352 


11 


- 28 


+ 48 


12 


-245 


-104 


13 


-234 


-120 


14 


+370 


+ 28 


15 


+ 51 


+ 2 



2 unpublished variables. 
Refs. 47, 87. No map. 

NGC 6366 a 17 h 25 m .l, 5 -05° 02' 



1 

2 



- 26 

+305 



- 42 
-390 



15.5 
15.7 



17.0 
16.8 



Ref. 134, with plate. 



NGC 6397 a 17 h 36 m .8, 5 -53° 39' 



1 


+210.7 


+448.4 


11.2 


16.0 


13727.6 314.6 


2 


-279.0 


-424.6 


13.8 


14.8 


45 or 60? 


3 


-220.0 


- 33.5 


14.6 


15.5 


33119.320 0.330667 



Unpublished co-ordinates and magnitudes for No. 3 from Swope, ref. O. 
Refs. 11, 20, 66, 90, 183. Plate in 20. 



NGC 6402 (Messier 14) a 17 h 35 m .O, 5 -03° 13' 



1 


+ 17 


+ 47 


14.3 


16.0 


2 


-116 


-119 


15.4 


16.3 


3 


- 3 


- 90 


16.2 


17.0 


4 


+ 169 


+ 73 


16.3 


17.5 


5 


-136 


+ 90 


16.1 


17.5 


6 


+ 34 


- 77 


15.8 


16.4 


7 


+ 62 


- 97 


14.9 


16.2 


8 


+ 96 


+ 35 


16.6 


17.7 


9 


+ 151 


- 39 


16.3 


17.5 


10 


- 51 


-205 


16.3 


17.4 



18.75 
2.7952 



13.59 



Sp. 
Sp. 



Sp. 



Variable Stars in Globular Clusters 75 

Catalogue — Continued 



NGC 6402 



No. 


x" 


y" 


Magnitudes Epoch of Period Remarks 








Max. 


Min. Maximum 


11 


+ 196 


-223 


16.0 


17.3 




12 


+224 


-177 


16.2 


17.6 




13 


- 29 


-118 


16.3 


17.6 




14 


+ 54 


+ 1 


16.2 


17.5 




15 


-135 


+ 147 


16.1 


17.5 




16 


- 79 


- 36 


16.2 


17.4 




17 


-228 


+ 122 


14.8 


15.7 


Sp., field? 


18 


+ 61 


- 22 


16.1 


17.7 




19 


-128 


+ 2 


16.3 


17.6 




20 


-145 


+ 98 


16.3 


17.4 




21 


+ 72 


+ 125 


16.3 


17.4 




22 


+ 70 


+ 95 


16.4 


17.6 




23 


+ 74 


+281 


15.9 


17.4 




24 


- 2 


+ 75 


16.1 


17.6 




25 


- 28 


-312 


16.4 


17.5 




26 


- 85 


+ 27 


16.5 


17.5 




27 


-421 


+ 151 


15.4 


16.2 




28 


-465 


+372 


15.0 


16.0 




29 


- 68 


-152 


15.7 


16.2 




30 


+ 76 


- 12 


16.2 


17.5 




31 


- 41 


+ 32 


16.0 


17.0 




32 


+ 36 


+ 147 


16.2 


17.1 




33 


-138 


+ 12 


16.2 


17.3 




34 


- 70 


+ 26 


16.4 


17.6 




35 


-112 


- 49 


16.2 


17.4 




36 


+204 


-346 


16.4 


17.5 




37 


+ 5 


+ 18 


16.4 


17.7 




38 


+ 11 


- 17 


16.0 


17.0 




39 


+ 46 


- 2 


16.1 


17.6 




40 


+253 


+310 


16.4 


17.1 




41 


- 13 


- 3 


16.0 


17.1 




42 


+ 36 


+ 12 


15.9 


17.1 




43 


+ 68 


+ 23 


16.2 


17.3 




44 


+ 20 


+ 116 


16.3 


17.5 




45 


- 90 


+ 94 


15.7 


16.4 




46 


+ 91 


- 66 


16.4 


17.4 




47 


- 89 


+ 26 


16.5 


17.6 




48 


- 4 


+ 40 


16.3 


17.7 




49 


- 98 


- 19 


16.0 


16.9 




50 


- 15 


- 38 


16.1 


17.0 




51 


+ 104 


-305 


16.5 


17.5 




52 


+ 82 


+ 39 


16.5 


17.0 




53 


+ 134 


+ 129 


16.4 


17.3 




54 


+ 121 


+ 113 


16.6 


17.6 




55 


+ 33 


+ 106 


16.5 


17.5 





76 Publications of the David Dunlap Observatory 

Catalogue — Continued 
NGC 6402 

No. x" y" Magnitudes Epoch of Period Remarks 

Max. Min. Maximum 



56 


- 68 


-184 


16.4 


17.4 


57 


+ 134 


-116 


16.3 


17.6 


58 


-123 


- 34 


16.4 


17.3 


59 


- 32 


+ 30 


16.4 


17.7 


60 


+ 41 


+ 54 


16.2 


17.7 


61 


+ 12 


- 43 


16.1 


17.7 


62 


-232 


-154 


16.5 


17.6 


63 


+ 122 


- 63 


16.5 


17.4 


64 


- 51 


-169 


16.5 


17.5 


65 


-125 


+ 13 


16.4 


17.2 


66 


-133 


+ 37 


16.6 


17.4 


67 


+ 34 


+ 14 


16.1 


17.5 


68 


+ 10 


- 19 


16.6 


17.5 


69 


+ 140 


+ 26 


16.6 


17.3 


70 


+ 43 


- 23 


16.0 


17.2 


71 


-116 


- 50 


16.5 


17.7 


72 


+ 122 


-119 


16.5 


17.5 



Refs. 102, 113, 117, 123, 165. Plate in 123. 



NGC 6426 a 17 h 42 m .4, 5 +03° 12' 



1 


-170 


+44 


2 


-204 


-53 


3 


- 94 


-33 


4 


- 77 


-74 


5 


- 68 


-22 


6 


- 46 


+52 


7 


+ 10 


- 4 


8 


- 15 


-53 


9 


- 39 


-85 


10 


+ 46 


+ 11 


11 


+285 


- 7 



prob. field 



Variables found by Baade, unpublished, ref. I; positions measured by Sawyer, ref. R. 



NGC 6522 


a 18 h 00 m .4, 


5 -30° 02' 












1 


-67.5 


+34.4 


17.29 


17.65 


32416.672 


0.269949 


222 


2 


+ 0.5 


+39.7 


17.18 


18.28 


32740.861 


0.481903 


133 


3 


+ 14.7 


+37.2 


17.30 


18.11 


32705.874 


. 223892 


44 


4 


+25.6 


+ 8.3 


17.27 


18.59 


32387.747 


. 563826 


170 






Variable Stars in Globular Clusters 



77 



Catalogue — Continued 



NGC 6522 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period 



Remarks 



5 


+66.0 


-42.6 


17.62 


18.09 


32349.871 


. 222755 


37 


6 


+96.5 


+30.5 


17.77 


18.23 


32416.753 


0.192392 


247 


7 


-51.5 


+62.7 


17.02 


17.61 




irreg. 


172, field 


8 


-20.2 


+49.6 


15.94 


17.11 


32290.987 


0.635019 


27, field 


9 


-19.5 


-64.9 


16.79 


17.27 


32740.786 


0.426448 


232, field 



New variables found by Baade, light elements by S. Gaposchkin, ref. I. 

Baade considers Nos. 2, 3, 4, 5, cluster members, Nos. 1 and 6 possible members, 7, 8, 9, 
field stars. Numbers at right are those assigned by Baade and Gaposchkin to variables in 
this galactic centre field. 

Ref. 164. 

NGC 6528 a 18 h 01 m .6, 5 -30° 04' 

Baade finds a few variables from rich galactic centre field projected against this cluster, 
but considers no variables yet found are cluster members. Ref. I. 

NGC 6535 a 18 h 01 m .3, 5 -00° 18' 



197 



+65 



16.3 17.3 



1 variable unpublished? Ref. A. 
Ref. 187 with plate. 

NGC 6539 a 18 h 02 m .l, 5 -07° 35' 
1 unpublished variable. Ref. A. 

NGC 6541 a 18 h 04 m .4, 5 -43° 44' 



1 



18 



126 



12.5 [16 



New position for Wood's variable determined by McKibben-Nail, ref. J. 
Refs. 63, 70. No map. 



NGC 6553 a 18 h 06 m .3, 5 -25° 56' 



+ 186 



+ 20 



2 


+ 75 


-152 


3 


- 23 


- 38 


4 


+ 16 


- 2 


5 


- 71 


- 12 


Nova 


-131: 


-281 



8 (12 



30955 



0.5642 




0.5818 


prob. field 


0.4886 




]100 




]100 






N Sgr 1943 



2 suspected variables. 

Unpublished data on new variables from Thackeray, co-ordinates of nova by Thackeray 
and Morrisby, ref. P. 

Refs. 51,166 (cluster no. is misprinted as 6533), 178. No map. 



78 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



NGC 6584 a 18 h 14 m .6, 5-52° 14' 

No variable in cluster. Ref. 71. No map. 

NGC 6626 (Messier 28) a 18 h 21 m .5, 5 -25° 54' 



No. 


x" 


y" 


Magnitudes 


Epoch of Period 


Remarks 








Max. 


Min. 


Maximum 




1 


+ 174.0 


+ 188.5 


15.1 


16.4 






2 


- 47.3 


+ 63.1 


14.3 


14.8 






3 


- 32.9 


+ 111.0 


14.6 


15.4 






4 


- 34.5 


+ 33.6 


13.6 


14.8 


32759.765 14.0 : 


Sp. 


5 


- 44.8 


+ 16.4 


14.9 


15.8 






6 


+ 34.1 


+ 50.4 


14.3 


15.2 






7 


+ 172.2 


+ 102.7 


15.9 


17.0 






8 


+227.3 


-222.3 


14.9 


16.3 






9 


-158.6 


-252.4 


14.9 


15.9 






10 


+ 96 


- 79 


13.5 


14.6 






11 


- 14 


+ 35 


15.0 


16.3 






12 


+ 148 


- 49 


14.9 


16.5 






13 


- 92 


- 24 


15.2 


16.7 






14 


-131 


-100 


15.7 


16.2 






15 


-472 


-186 


15.8 


17.0 






16 


+432 


-372 


15.9 


17.0 







Refs. 11, 14, 20, 165, 170. Plate in 20. 



NGC 6656 (Messier 22) a 18 h 33 m .3, S -23° 58' 



1 


- 54.0 


- 10.0 


13.9 


14.9 


29425.892 


0.615543 


348 


2 


+ 158.6 


+ 69.2 


13.1 


14.3 


29436.917 


0.6418 


857 


3 


+214.7 


+420.2 


14.6 


[15.2 


29434.918 


0.340 




4 


- 4.0 


- 68.0 


13.6 


14.6 


29438.96 


0.716391 


465 


5 


-178.2 


- 33.8 


12.0 


12.8 






158, Sp. 


6 


- 74.4 


-100.0 


13.6 


14.5 


29429.938 


0.638547 


299 


7 


-342.4 


+411.2 


13.5 


14.5 


29424.947 


0.6495191 


82 


8 


- 39.5 


- 64.8 


12.0 


12.7 


13373.6 


61: 


382, Sp. 


9 


-211.2 


- 35.0 


12.7 


13.3 


16761.5 


87.71 


135, Sp. 


10 


- 39.0 


-125.0 


13.5 


14.6 


29438.919 


0.646020 


389 


11 


- 14.4 


+ 14.0 


12.9 


13.8 


29436.917 


1.69050 


461, Sp. 


12 


+ 0.8 


- 77.8 


14.2 


14.5 


var.? 




531 


13 


+ 76.4 


+ 158.9 


13.5 


14.5 


29439.920 


0.6725217 


719 


14 


+250.8 


+486.4 


13.8 


[15.5 


18160.6 


200.2 


field, Sp. 


15 


+ 115.3 


- 83.2 


14.0 


14.5 


29439.844 


0.3721 


804 


16 


+ 185.0 


- 17.8 


14.0 


14.5 


29429.938 


0.3237 


877 


17 


-438.0 


+ 126.0 


14.6 


[15 








18 


- 86 


+433 


13.7 


14.4 


29425.892 


0.3249 


259 


19 


- 33 


+ 130 


13.9 


14.5 


29424.947 


0.384010 


381 



Variable Stars in Globular Clusters 
Catalogue — Continued 



79 



NGC 6656 



No. 


x" 


y" 


Magni 
Max. 


itudes 
Min. 


Epoch of 
Maximum 


Period 


Remarks 


20 


-120 


-123 


13.7 


14.5 


29429.938 


0.430061 


221 


21 


+ 36 


+ 88 


13.8 


14.8 


29425.892 


0.3265 


601 


22 


-1089 


+213 


13.7 


14.9 


29424.947 


0.624538 




23 


- 5 


- 14 


14.1 


14.9 


29432.919 


0.3557 


505 


24 


- 26 


+ 10 


13.8 


14.2 


29425.892 


0.415: 


427 


25 


+326 


+375 


13.9 


14.4 


29425 . 892 


0.4023595 


952 



Numbers at right identify star in Chevalier's catalogue, Zo-Sb Ann., v. 10, C, pp. 1-51, 
1918. 

Refs. 11, 14, 20, 48, 68a, 81, 155, 165. Plates in 20, 155. 



NGC 6712 a 18 h 50 m .3, 5 -08° 47' 



1 


- 63 


- 17 


15.8 


17.0 


2 


+ 71 


+ 17 


14.0 


14.9 


3 


- 28 


- 96 


16.2 


17.0 


4 


+ 181 


- 28 


16.4 


16.9 


5 


+ 67 


- 74 


15.6 


16.8 


6 


+ 18 


- 39 


15.6 


16.6 


7 


-130 


- 17 


14.2 


[17.0 


8 


+ 24 


+ 60 


14.6 


15.8 


9 


- 1 


+290 


16.4 


[17.4 


10 


- 99 


+ 30 


15.2 


16.0 


11 


-122 


-339 


16.0 


16.6 


12 


+ 31 


+ 38 


16.0 


17.4 



28728: 



105: 



APSct 



Co-ordinates of No. 1 shifted slightly to conform with other variables. Some unpublished 
variables, ref. A. 

Refs. 36, 151, 187. Chart in 151, plate in 187. 



NGC 6715 (Messier 54) a 18 h 52 m .O, 5 -30° 32' 



1 


+ 


83 


+ 10 


16.7 


17.5 


2 


— 


6 


+ 90 


16.8 


17.5 


3 


— 


14 


+ 179 


17.1 




4 


— 


38 


+ 311 


17.1 




5 


— 


129 


+ 43 


17.2 




6 


+ 


210 


- 177 


17.0 




7 


+ 


54 


- 165 


17.2 




8 


+ 


365 


- 330 


• 16.8 


17.6 


9 


— 


67 


- 637 






10 


+ 


115 


- 530 






11 


— 


106 


-1086 






12 


— 


220 


- 248 


16.7 


17.3 


13 


— 


238 


+ 451 







80 



NGC 6715 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 




x" 




y" 


Magnitudes 


Epoch of Period 


Remarks 












Max. 


Min. 


Maximum 




14 


+ 


240 


+ 


213 


17.2 








15 


+ 


124 


— 


63 


17.1 








16 


+ 


87 


— 


917 










17 


+ 


697 


— 


435 










18 


+ 


511 


+ 


382 










19 




L260 


— 


190 


16? 








20 


+ 


106 


+ 


95 


17.2 








21 


+ 


85 


— 


231 


17.2 








22 


+ 


11 


— 


171 


17.2 








23 


+ 


240 


+ 


210 


17.2 








24 


+ 


453 


+ 


55 










25 


+ 


147 


+ 


337 


16.8 


17.4 






26 


+ 


187 


— 


150 










27 


+ 


209 


— 


306 


17.1 








28 


+ 


68 


+ 


lfil 


17.1 









Ref. 180 with plate. 



NGC 6723 a 18 h 56 m .2, 8 -36° 42' 



1 


+ 75.6 


-197.4 


15.10 


15.80 


23618.56 


0.5384149 


2 


4-135.2 


- 76.9 


14.45 


16.05 


23618.68 


0.5048 


3 


-244.9 


+ 6.0 


14.70 


15.80 


23618.90 


0.4949 


4 


+ 17.1 


+ 77.4 


14.55 


15.90 


23618.79 


0.4524 


5 


- 4.8 


+ 50.8 


15.20 


16.00 




0.49 


6 


+ 7.1 


+ 46.2 


14.90 


16.05 


23618.80 


0.4812 


7 


+ 197.9 


- 70.1 


15.20 


15.75 


23618.91 


0.4675 


8 


+ 15.9 


+ 10.8 


14.75 


15.60 




0.53 


9 


+ 73.6 


+ 17.2 


14.70 


15.80 


23618.71 


0.5779 


10 


+ 149.6 


+ 84.2 


15.10 


15.60 


23618.60 


0.33855 


11 


+ 133.3 


+228.8 


14.85 


15.65 


23618.70 


0.5342935 


12 


+ 45.1 


- 45.0 


14.95 


15.85 


23618.53 


0.5333 


13 


- 46.8 


- 70.8 


14.80 


16.00 


23618.48 


0.5078 


14 


- 37.9 


- 43.0 


14.95 


15.80 


23618.91 


0.6190 


15 


- 93.4 


+ 165.7 


14.40 


15.80 


23618.74 


0.4355162 


16 


- 46.4 


+ 91.6 


14.75 


15.65 


23618.67 


0.4114 


17 


+ 43.9 


-102.0 


14.4 


15.7 




0.5301595 


18 


-139.2 


- 24: 


14.6 


15.3 




0.5263801 


19 


-174.0 


-120: 


14.6 


15.5 




0.5347108 



The three variables found by van Gent have been given numbers 17, 18, 19. 
Refs. 14, 20, 73, 74, 91, 96. Plate in 20, charts in 96. 



NGC 6752 a 19 h 06 m .4, 5 -60° 04' 
1 variable, 4' from cluster centre. 
Refs. 11, 14, 20. No map. 



Variable Stars in Globular Clusters 
Catalogue — Continued 
NGC 6760 a 19 h 08 m .6, 5 +00° 57' 



81 



No. 



Magnitudes 
Max. Min. 



Epoch of Period Remarks 

Maximum 



1 


+57 


- 57 


15.7 


17.0 


2 


- 6 


-100 


16.7 


17.2 


3 


+31 


- 10 


15.5 


[17.4 


4 


+42 


+ 39 


15.4 


[17.5 



2? unpublished variables. Ref. A. 
Ref. 187 with plate. 

NGC 6779 (Messier 56) a 19 h 14 m .6, 5 +30° 05' 



1 


+ 44.69 


+ 74.10 


15.0 


16.2 


30899.341 


1.510019 


363, Sp. 


2 


+ 18.16 


+ 33.09 


15.1 


15.6 






326 


3 


+ 25.10 


+ 91.69 


14.4 


15.1 




semireg. 


337, Sp. 


4 


-112.13 


-159.46 


15.9 


16.4 






141 


5 


+ 6.79 


-134.78 


14.4 


15.2 




semireg. 


305 


6 


- 2.02 


+ 37.06 


12.9 


14.8 


30172.7 


90.02 


284, Sp. 


7 


+293.48 


-213.24 


15.6 


16.3 




irreg. 


504 


8 


- 97.63 


-335.90 


15.9 


16.7 




semireg. 


150 


9 


+ 177 


+525 


15.6 


16.1 




semireg. 




10 


-431.53 


+ 88.33 


16.4 


17.4 


30967.473 


0.5988948 




11 


-415.58 


+283.80 


15.5 


16.3 


33152.555 


0.07564 


17 


12 


-243.96 


- 95.41 


15.6 


16.4 






68 



Right-hand column gives identification no. in Kiistner's Catalogue, Bonn Veroff., no. 14, 
1920. 

Refs. 35, 51, 134, 146, 154, 165, 169, 171, 187. Plates in 51, 134, 154. 

NGC 6809 (Messier 55) a 19 h 36 m .9, 5 -31° 03' 



1 +304.2 - 55.6 

2 -214.9 - 26.0 

3 +78 -304 

4 +108 + 59 

5 - 41 - 74 

6 +111 - 20 



32413.39 
32467.18 
32413.22 
32413.34 

32413.32 



0.57997286 

0.4061601 

0.6619023 

0.3841702 

0.2? 

0.388904 



HV 658 
HV659 
HV 12213 
HV 12214 
HV 12215 
HV 12216 



Refs. 20, 75, 77, 174. Plate in 20. 



NGC 6838 (Messier 71) a 19 h 51 m .5, 5 +18° 39' 



1 


+ 140 


+ 24 


13.5 


14 .9 


2 


+ 44 


-146 


13.8 


14.7 


3 


+ 44 


- 70 


15.2 


17.0 


4 


+266 


+ 31 


14.7 


15.3 



Z Sge 

4873 

eel. 



Number for Var. 2 from Russian catalogue of suspected variables, 1951. 
Refs. 83a, 182, 187 with plate. 



82 Publications of the David Dunlap Observatory 

Catalogue — Continued 
NGC 6864 (Messier 75) a 20 h 03 m .2, 8 -22° 04' 



No. 


x" 


y" 


Magnitudes 
Max. Min. 


Epoch of 
Maximum 


Period 


Remarks 


1 


+ 15.6 


-83.4 










2 


- 9.0 


+54.0 










3 


+ 18.0 


+85.5 










4 


- 18.0 


-84.6 










5 


+ 108.0 


-36.0 










6 


+ 8.4 


-81.0 










7 


- 24.6 


+78.0 










8 


- 13.5 


-41.4 










9 


+ 45.6 


-24.0 










*10 


- 43.5 


+50.4 










11 


+ 121.2 


+84.0 










12 


+ 39.6 


+75.0 











*Suspected. Four additional suspected variables, numbered 13-16, are omitted. 
Ref. 51, with plate. 

NGC 6934 a 20 h 31 m .7, 5 +07° 14' 



1 


- 45 


- 39 


15.9 


17.3 


2 


- 40 


- 14 


16.0 


17.4 


3 





+ 58 


15.9 


17.3 


4 


+ 39 


+ 58 


15.6 


17.2 


5 


+ 59 


+221 


15.9 


17.2 


6 


- 27 


- 33 


16.1 


17.5 


7 


+ 92 


+ 59 


16.2 


17.3 


8 


+ 100 


+ 50 


16.3 


17.1 


9 


+ 63 


+ 18 


15.9 


17.4 


10 


-135 


+ 72 


15.8 


17.2 


11 


+ 17 


+ 28 


16.6 


17.5 


12 


+ 29 


- 44 


15.6 


17.1 


13 


- 47 


+ 25 


16.0 


17.2 


14 


- 7 


- 90 


15.8 


17.4 


15 


+ 10 


- 53 


15.2 


15.8 


16 


+ 36 


+ 18 


16.1 


17.4 


17 


- 73 


-107 


16.2 


17.4 


18 


+ 49 


- 8 


16.1 


17.1 


19 


+ 30 


+ 1 


15.9 


17.4 


20 


- 26 


+ 17 


16.0 


17.3 


21 


- 35 


- 3 


16.1 


17.5 


22 


-240 


-173 


16.0 


17.2 


23 


- 31 


- 16 


16.4 


17.4 


24 


+ 37 


- 53 


16.3 


17.3 


25 


+ 50 


+ 37 


15.9 


17.4 


26 


+ 31 


-196 


16.4 


17.2 


27 


-148 


+ 180 


16.2 


17.2 


28 


-234 


+ 100 


15.7 


17.3 



NGC 6934 



Variable Stars in Globular Clusters 
Catalogue — Continued 



83 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period 



Remarks 



29 


— 


85 


— : 


183 


15.7 


17.3 


30 


+ 161 


+ 127 


16.2 


17.2 


31 


+ 146 


-: 


101 


16.0 


17.3 


32 


— 


10 


+ 


51 


15.8 


17.1 


33 


+ 


37 


+ 


12 


16.0 


17.2 


34 


— 


21 


+ 


16 


16.1 


17.4 


35 


+ 157 


- 


142 


16.0 


17.5 


36 


+ 


10 


— 


35 


15.6 


17.0 


37 


+ 


23 


+ 


10 


16.0 


17.3 


38 


+ 


12 


— 


18 


16.2 


17.3 


39 


+ 


8 


— 


16 


16.1 


17.3 


40 


— 


8 


+ 


26 


15.7 


16.3 


41 


+ 


30 


— 


39 


16.2 


17.5 


42 


+ 


55 


+ 


20 


15.9 


17.3 


43 


+ 


21 


+ 


27 


15.9 


17.4 


44 


— 


43 


— 


30 


15.8 


17.3 


45 


— 


32 


— 


9 


15.8 


17.2 


46 


+ 


14 


— 


24 


16.4 


17.4 


47 


+ 


10 


— 


26 


16.3 


17.3 


48 


+ 


33 


+ 


52 


16.0 


17.4 


49 


+ 


13 


— 


55 


16.2 


17.3 


50 


+ 


15 


— 


37 


16.4 


17.3 


51 


+ 


7 


— 


25 


15.4 


16.1 



Refs. 102, 107, 113, 123. Plate in 123. 

Numerous periods, all RR Lyrae type, are nearly ready for publication by Sawyer, ref. R 



NGC 6981 (Messier 72) a 20 h 50 m .7, 5 -12° 44' 



1 


+ 43.5 


— 


54.0 


16.45 


17.25 


33129.400 


0.619818 


2 


+ 99.0 


+ 194.4 


15.95 


17.30 


33126.405 


0.4652687 


3 


- 52.5 


— 


58.5 


16.10 


17.30 


33809.553 


0.4976104 


4 


-106.5 


+ 


37.5 


16.25 


17.35 


33147.462 


0.5524877 


5 


- 38.4 


— 


21.6 


16.40 


17.43 


22163.738 


0.4991 


6 


+ 78.0 


+ 


78.6 


16.70 


17.10 






7 


- 3.6 


+ 


55.5 


16.20 


17.29 


22163.896 


0.52463 


8 


- 6.6 


+ 


89.4 


16.20 


17.50 


33145.372 


0.568392 


9 


+ 11.4 


+ 


50.4 


16.30 


17.34 


22162.61 


0.5902 


10 


- 48.6 


— 


73.5 


16.20 


17.30 


33857.504 


0.5581805 


11 


+ 57.0 


— 


36.6 


16.35 


17.25 


33856.570 


0.521466 


12 


+ 9.0 


— 


21.6 


16.31 


17.17 


22163.90 


0.4111 


13 


+ 13.5 


+ 


17.4 


16.10 


17.15 


22161.907 


0.54182 


14 


- 13.5 


+ 


36.0 


16.40 


17.06 


22163.90 


0.5904 


15 


- 64.5 


— 


21.0 


16.20 


17.35 


33125.435 


0.5403524 


16 


- 4.5 


— 


19.5 


16.30 


17.37 


22163.83 


0.5641 



84 



NGG 6981 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period Remarks 








Max. 


Min. 


Maximum 




17 


• + 3.6 


- 43.5 


16.45 


17.35 


33125.483 


0.573539 


18 


- 26.4 


- 37.5 


15.70 


16.28 


22162.88 


0.52016 


19 


+ 3.0 


+ 112.5 


17.15 


17.30 


not var. 




20 


- 54.6 


+ 15.0 


16.50 


17.40 


33857.420 


0.595046 


21 


- 82.5 


+ 12.6 


16.10 


17.50 


33145.370 


0.5311618 


22 


-113.4 


+ 1.5 


17.10 


17.25 


not var. 




23 


- 99.0 


+ 116.4 


16.20 


17.25 


33834.550 


0.5850834 


24 


- 15.6 


- 24.0 


16.20 


16.55 


22161.92 


0.4973: 


25 


-133.5 


+ 67.5 


16.50 


17.15 


33481.810 


0.3533494 


26 


- 91.5 


- 45.0 


16.90 


17.20 






27 


+209 . 4 


-234.0 


15.85 


17.25 


33856.560 


0.6739040 


28 


- 65.4 


+ 81.0 


16.30 


17.15 


33853.437 


0.5672533 


29 


+ 36.0 


- 52.5 


16.40 


17.37 


22161.83 


0.36865 


30 


+ 71.4 


- 97.5 


16.50 


16.90 






31 


+ 5.4 


+ 36.6 


16.50 


17.22 


22162.02 


0.55465 


32 


-138.0 


- 42.0 


16.55 


17.30 


33834.545 


0.5282821 


33 


+ 2.4 


- 60.6 


16.95 


17.25 






34 


- 6.0 


+ 7.5 


16.06 


16.73 






35 


+231 


+ 27 


16.2 


17.4 






36 


- 12 





16.0 


16.8 






37 


+ 7 


- 8 


15.5 


16.5 






38 


+ 5 


- 9 


16.6 


17.3 






39 


+ 195 


+243 


16.8 


17.6 






40 


+ 18 


+ 16 


16.4 


17.4 






41 


- 15 


- 20 


16.7 


17.5 







Refs. 36, 51, 52, 185, 187. Plates in 51, 185, 187. 



NGC 7006 a 20 h 59 m .l, S +16° 00' 



1 


-177.9 


+ 114.8 


2 


- 35.3 


- 37.3 


3 


- 24.4 


+ 34.2 


4 


- 21.0 


- 41.1 


5 


- 20.9 


+ 38.4 


6 


- 13.5 


- 44.5 


7 


+ 3.2 


- 36.9 


8 


+ 34.4 


+ 13.5 


9 


+ 39.4 


+ 16.6 


10 


+ 42.8 


- 11.8 


11 


+ 148 


+ 50 


12 


+ 122.0 


- 64.0 


13 


+ 102.7 


+ 40.2 


14 


+ 35.3 


+ 128.3 


15 


- 11.5 


+ 114.8 


16 


- 39.6 


+ 135.5 



not var. 



not var. 



var. ! 



Variable Stars in Globular Clusters 



85 



Catalogue — Continued 



NGC 7006 



No. 



Magnitudes 
Max. Min. 



Epoch of 
Maximum 



Period 



Remarks 



17 


— 


99.3 


+ 85.5 


18 


— 


29.6 


- 89.5 


19 


— 


0.6 


- 25.3 


20 


— 


21.2 


- 24.4 


21 


— 


21.5 


- 18.4 


22 


— 


12.6 


- 15.8 


23 


— 


27.6 


- 7.5 


24 


— 


25.8 


- 2.9 


25 


— 


19.2 


+ 5.2 


26 


— 


10.6 


- 2.9 


27 


— 


11.8 


+ 0.3 


28 


— 


15.8 


+ 4.3 


29 


+ 


35.0 


+ 31.6 


30 


+ 


5.2 


+ 16.6 


31 


+ 


10.0 


+ 11.2 


32 


+ 


20.9 


+ 13.8 


33 


+ 


31.9 


+ 22.4 


34 


+ 


26.4 


+ 9.2 


35 


+ 


36.2 


- 2.0 


36 


+ 


25.5 


- 3.7 


37 


+ 


18.9 


- 3.4 


38 


+ 


21.5 


- 18.4 


39 


+ 


11.5 


- 25.3 


40 


+ 


9.7 


- 14.3 


41 


+ 


1.4 


- 11.2 


42 


+ 


9.5 


- 7.5 


43 


— 


4.0 


- 28.7 



26586. 



252: 



Data supplied by Sandage who has prepared Hubble's work on these variables for publica- 
tion in P.A.S.P., with print. Co-ordinates of all variables now on Hubble's system, which 
differs from Shapley and Mayberry's by x = +3".2, y = +l".l. Ref. M. 

Refs. 51, 57. 



NGC 7078 (Messier 15) a 21 h 27 m .6, 8 + 1 1° 57' 



1 


-118.6 


+ 24.4 


14.36 


15.54 


15021.990 


1 . 437478 


156, Sp. 


2 


-171.7 


+ 6.0 


15.14 


15.95 


15021.078 


0.684270 


91 


3 


-248.0 


- 46.8 


15.34 


16.03 


15021.097 


0.3891545 


61 


4 


-112.6 


-163.6 


15.31 


16.08 


15021.277 


0.3135750 


162 


5 


-100.3 


-212.5 


15.33 


16.00 


15021.291 


0.384619 


186 


6 


+ 24.4 


+ 76.5 


15.20 


16.29 


15021 . 603 


0.665971 


680 


7 


+ 10.1 


+ 73.2 


15.56 


16.16 


15021.134 


0.367586 


611 


8 


- 0.6 


+ 126.8 


15.22 


16.14 


15021.330 


0.646251 


564 


9 


+ 15.6 


+ 138.7 


15.12 


15.98 


15021 . 425 


0.715284 


632 


10 


+ 125.6 


+ 1.7 


15.50 


16.04 


15021.370 


0.386395 


976 


11 


+ 172.3 


- 21.8 


15.28 


16.07 


1.5021.243 


3435678 


1034 



86 



NGC 7078 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 








Max. 


Min. 


Maximum 






12 


+ 163.0 


- 50.7 


15.22 


16.13 


15021.090 


0.592934 


1017 


13 


+ 126.6 


- 68.8 


15.12 


16.20 


15021.365 


0.574961 


980 


14 


+ 84.1 


-256.2 


15.44 


16.00 


15021 . 128 


0.381999 


905 


15 


+ 81.7 


-304.1 


15.22 


16.16 


15021.064 


0.584386 


894 


16 


+ 101.9 


+ 129.8 


15.50 


15.97 


15021 . 556 


0.69464 


942 


17 


+ 83.7 


+ 110.6 


15.40 


15.90 


15021.216 


0.666979 


901 


18 


+ 77.3 


+ 100.4 


15.50 


16.00 


15021.331 


0.37816 


886 


19 


+ 111.3 


+ 160.4 


14.85 


16.10 


15021.552 


0.572293 


964 


20 


+ 81.2 


- 9.8 


15.27 


16.17 


15021.261 


0.700570 


891 


21 


+ 34.4 


- 57.5 


15.25 


16.20 


15021 . 322 


0.624690 


732 


22 


-330.8 


- 45.8 


15.18 


16.04 


15021.566 


0.721728 


30 


23 


+ 192.0 


+256.1 


15.07 


15.95 


15021 . 198 


0.632690 


1053 


24 


-106.7 


- 6.1 


15.42 


16.17 


15021.055 


0.369697 


173 


25 


+302.9 


- 10.7 


15.10 


16.00 


15021 . 499 


0.665329 


1093 


26 


+ 23.5 


+331.9 


15.33 


15.97 


15021.272 


0.402326 


675 


27 


+222.5 


+248.2 


var.? 








1065 


28 


+309.9 


+534.2 


15.19 


16.15 


15021 . 632 


0.670640 




29 


+ 163.3 


+212.2 


15.13 


16.06 


15021.281 


0.574062 


1020 


30 


-165.0 


- 3.4 


15.42 


16.00 


15021.293 


0.405976 


102 


31 


-112.6 


+245.6 


15.30 


16.07 


15021.375 


0.435693 


164 


32 


- 50.4 


+ 107.8 


15.14 


15.98 


15021.066 


0.605400 


332 


33 


- 41.2 


- 29.4 










380? 


34 


- 55.4 


- 54.5 


var.? 








322 


35 


- 34.0 


-163.6 


15.40 


16.11 


15021.278 


0.383997 


412 


36 


- 27.7 


- 81.6 


15.18 


16.26 


15021.371 


0.624142 


437 


37 


- 25.2 


- 77.4 










451 


38 


+ 7.6 


-146.2 


15.29 


16.16 


15021.328 


0.375274 


600 


39 


+ 20.5 


-124.8 


15.34 


16.14 


15021 . 259 


0.389984 


659 


40 


+ 131.8 


-116.7 


15.34 


16.00 


15021.320 


0.377390 


986 


41 


+ 62.9 


- 55.4 










835 


42 


+227.5 


- 36.8 


15.34 


16.07 


15021.110 


0.360167 


1066 


43 


+416.7 


+ 103.2 


15.25 


15.88 


15021.041 


0.406744 


1122 


44 


+ 91.3 


+ 3.0 


15.20 


16.11 


15021.373 


0.595568 


920 


45 


+ 66.9 


- 31.0 


15.19 


16.14 


15021.521 


0.66210 


854 


46 


+ 56.0 


+ 33.2 


15.40 


16.32 


15021.210 


0.692730 


814? 


47 


+ 45.7 


- 4.3 


15.32 


16.04 


15021.604 


0.662900 




48 


+ 59.7 


+ 150.6 


15.35 


16.17 


15021.266 


0.378881 


827 


49 


+ 40.3 


+ 166.6 


14.75 


15.35 


15021.037 


0.417972 


765 


50 


+ 165.0 


+ 100.0 


15.35 


16.00 


15021.262 


0.29850 


1022 


51 


+ 6.2 


+ 91.4 


15.51 


16.03 


15021.158 


0.397757 


590 


52 


+ 192.4 


- 22.6 


15.12 


16.24 


15021 . 106 


0.577608 


1055 


53 


- 92.6 


-111.0 


15.28 


15.91 


15021.301 


0.414135 


210 


54 


+ 10.8 


+ 88.4 


15.58 


16.13 


15021.240 


0.398325 


612 


55 


+ 65.3 


- 18.8 


15.49 


16.30 


15021.675 


0.719615 


850 



Variable Stars in Globular Clusters 
Catalogue — Continued 



87 



NGC 7078 



No. 


X 


ft 


y 


a 


Magnii 
Max. 


:udes 
Min. 


Epoch of 
Maximum 


Period 


Remarks 


56 


+ 


57.4 




0.0 


15.19 


16.11 


15021.249 


0.570307 


820 


57 


+ 


75.2 


— 


56.4 


15.26 


15.97 


15021.243 


0.348935 


872? 


58 


— 


55.6 


+ 


8.8 


15.64 


16.32 


15021.388 


0.420463 


321 


59 


+ 


41.3 


+ 


41.5 


15.50 


16.10 


15021.117 


. 565260 


770 


60 


+ 


53.4 


— 


59.3 


15.29 


16.00 


15021.118 


0.691852 


805 


61 


— 


67.3 


— 


40.2 


15.43 


16.16 


15021.526 


0.61030 


281 


62 


— 


71.6 


+ 


39.6 


15.65 


16.26 


15021.161 


0.38818 


264 


63 


+ 


49.8 


+ 


31.0 


15.54 


16.44 


15021.076 


0.67370 


790? 


64 


— 


46.2 


+ 


19.1 


15.61 


16.24 


15021.207 


0.351695 


350 


65 


-102.4 


— 


38.7 


15.43 


16.18 


15021.377 


0.756048 


177 


66 


— 


68.4 




112.4 


15.41 


16.10 


15021 . 191 


0.379330 


275 


67 


— 


86.6 


— 


10.4 










227 


68 


— 


31.8 


+ 


12.6 










420 


69 


— 


37.0 


— 


25.2 












70 


— 


34.0 


— 


19.2 












71 


— 


34.8 


— 


12.6 












72 


— 


2.2 


+ 


34.8 










556 


73 


— 


3.7 


+ 


20.0 












74 


+ 


36.3 


— 


85.8 










754 


75 


+ 


2.2 


— 


30.3 












76 


+ 


0.7 


— 


28.9 












77 


— 


11.8 


— 


22.9 












78 


— 


6.7 


+ 


47.4 










533 


79 


+ 


21.5 


— 


23.7 












80 


— 


47.4 


— 


26.6 










345 


81 


— 


21.5 


— 


5.9 












82 


— 


20.7 


+ 


1.5 












83 


+ 


16.3 


— 


7.4 












84 


+ 


18.5 


— 


16.3 












85 


+ 


20.7 


+ 


2.2 












86 


+ 


12.6 


+ 


4.4 


13.4 


14.6 






prob. Cep. 


87 


+ 


23.7 


— 


23.7 












88 


+ 


2.2 


+ 


26.6 












89 


— 


23.7 


— 


6.7 










463 


90 


+ 


31.1 


+ 


4.4 












91 


+ 


67.3 


+ 


28.9 










847 


92 


+ 


9.6 


— 


25.2 










610 


93 


+ 


27.4 


— 


33.3 










705 


94 


+ 


3.7 


+ 


28.9 












95 


+ 


5.2 


— 


40.0 










599 



8 variables still unpublished? Ref. 76. Numbers at right are from Kiistner's catalogue, 
Bonn Veroff., no. 15, 1921. (No. 37 might be 452.) 

Refs. 14, 17, 20, 34, 39, 41. 45, 76, 95, 100, 128, 165, 172. Plates in 20, 41, 172. 



88 



Publications of the David Dunlap Observatory 
Catalogue — Continued 



NGC 7089 (Messier 2) a 21 h 30 m .9, 5 -01° 03' 



No. 


x" 


y" 


Magnitudes 


Epoch of 


Period 


Remarks 








Max. 


Min. 


Maximum 






1 


4- 25.6 


+ 79.4 


13.2 


14.8 


26607.800 


15.5647 


Sp. 


2 


- 45.8 


+ 71.1 


14.6 


16.1 


21454.971 


0.527858 




3 


4-222.9 


- 39.6 


15.1 


16.4 


26921.936 


0.619705 




4 


- 26.8 


+ 31.5 


15.2 


16.6 


26628.644 


0.564247 




5 


- 44.4 


+ 2.1 


13.2 


14.9 


26628.644 


17.5548 


Sp. 


6 


4- 11.8 


- 45.4 


13.2 


14.9 


22162.928 


19.3010 


Sp. 


7 


4-153.0 


-189.2 


15.1 


16.4 


27274.901 


0.594857 




8 


- 66.9 


- 56.8 


15.1 


16.4 


27273.896 


0.643677 




9 


-173.2 


-128.2 


15.2 


16.4 


27274.901 


0.609291 




10 


+ 90.6 


+ 38.8 


15.2 


16.4 


27275.909 


0.466910 


Sp. 


11 


+ 85 


+ 8 


12.5 


14.0 


31259.8 


67.086 




12 


- 62 


+ 43 


15.1 


16.5 


26628.776 


0.665616 




13 


- 77 


+ 73 


15.1 


16.4 


26924.972 


0.706616 




14 


4- 83 


- 68 


15.4 


16.4 


20749.843 


0.693785 




15 


+ 80 


- 76 


15.7 


16.4 


26944.880 


0.430152 




16 


- 31 


- 27 


15.3 


16.5 


27275.950 


0.655917 




17 


+ 2 


- 63 


15.2 


16.3 


27274.901 


0.636434 











Refs. 11, 13, 14, 16, 20, 88, 102, 112, 123, 165, 169. Plates in 20, 112, 169. 



NGC 7099 (Messier 30) a 21 h 37 m .5, S -23° 25' 



1 + 30.0 - 60.6 

2 + 58.6 -126.2 

3 - 96.7 - 39.6 

4 -339: - 51: 



14.98 16.31 

14.92 16.04 

14.91 16.06 

16.4 [18 



32414.485 
32060.46 
32039.59 
32450. 



0.74365 
0.6535049 
0.69632 
11-15 SS Cyg 



Refs. 11, 14, 20, 167, L. Plates in 20, 167. 



NGC 7492 a 23 h 05 m .7, 5 - 15° 54' 



+ 1.2 



+96.6 



4 suspected variables and 8 unpublished variables. 
Refs. 51, 87. Plate in 51. 



Variable Stars in Globular Clusters 89 

REFERENCES TO VARIABLE STARS IN GLOBULAR CLUSTERS IN 
CHRONOLOGICAL ARRANGEMENT 

1. 1889 - Pickering, E. C, A.N., v. 123, p. 207. 

2. 1890 - Common, A. A., M.N., v. 50, p. 517. 

3. 1890 - Fleming, M., Sid. Mess., v. 9, p. 380. 

4. 1890 - Fleming, M., A.N., v. 125, p. 157. 

5. 1890 - Packer, D. E., Sid Mess., v. 9, p. 281; E. M., v. 51, p. 378. 

6. 1890 - Packer, D. E., Sid Mess., v. 10, p. 107. 

7. 1890 - Packer, D. E., E.M., v. 52, p. 80. 

8. 1891 - Porro, F., A.N., v. 127, p. 197. 

9. 1894 - Pickering, E. C, A.N., v. 135, p. 129. 

10. 1895 - Belopolsky, A., A.N., v. 140, p. 23. 

11. 1895 • Pickering, E. C, H.C., no. 2; A.N., v. 139, p. 137; Ap.J., v. 2, p. 321. 

12. 1896 - Pickering, E. C, A.N., v. 140, p. 285. 

13. 1897 - Chevremont, A., Bull. Soc. Astr. France, v. 11, p. 485. 

14. 1897 - Pickering, E. C, H.C., no. 18; A.N., v. 144, p. 191; Ap.J., v. 6, p. 258. 

15. 1898 - Barnard, E.E.,A.N.,v. 147, p. 243. 

16. 1898 - Chevremont, A., Bull. Soc. Astr. France, v. 12, p. 16, 90. 

17. 1898 - Pickering, E. C, H.C., no. 24; A.N., v. 146, p. 113; Ap.J., v. 7, p. 208. 

18. 1900 - Barnard, E. E., Ap.J., v. 12, p. 182. 

19. 1900 - Pickering, E. C, H.C., no. 52; A.N., v. 153, p. 115; Ap.J., v. 12, p. 159. 

20. 1902 - Bailey, S. I., H.A., v. 38. 

21. 1904 - Leavitt, H. S., H.C., no. 90; A.N., v. 167, p. 161. 

22. 1906 - Barnard, E. E., A.N., v. 172, p. 345. 

23. 1909 - Barnard, E. E., Ap.J., v. 29, p. 75. 

24. 1909 - Barnard, E. E., A.N., v. 184, p. 273. 

25. 1913 - Bailey, S. I., H.A., v. 78, p. 1-98; Viert. der Astr. Ges.. v. 48, p. 418. 

26. 1913 - Barnard, E. E., A.N., v. 196, p. 11. 

27. 1914 - Barnard, E. E., Ap.J., v. 40, p. 179. 

28. 1914 - Shapley, H., Alt. W. Cont., no. 91 = Ap.J., v. 40, p. 443. 

29. 1915 - Shapley, H., P.A.S.P., v. 27, p. 134. 

30. 1915 - Shapley, H., P.A.S.P., v. 27, p. 238. 

31. 1916 - Bailey, S. I., H.C., no. 193. 

32. 1916 - Shapley, H., P.A.S.P., v. 28, p. 81. 
32a. 1916 - Shapley, H., P.A.S.P., v. 28, p. 282. 

33. 1917 - Bailey, S. I., H.A., v. 78, pt. 2. 

34. 1917 - Bailey, S. I., Pop. Astr., v. 25, p. 520. 

35. 1917 - Davis, H., P.A.S.P., v. 29, p. 210. 

36. 1917 - Davis, H., P.A.S.P., v. 29, p. 260. 

37. 1917 - Shapley, H., Ml. W. Cont., no. 116, p. 79. 

38. 1917 - Shapley, H. and Davis, H., P.A.S.P., v. 29, p. 140. 

39. 1918 - Bailey, S. I., Pop. Astr., v. 26, p. 683. 

40. 1918 - Shapley, H., Mt. W. Cont., no. 151 = Ap.J., v. 48, p. 89. 

41. 1919 - Bailey, S. I., Leland, E. F., and Woods, I. E., H.A., v. 78, pt. 3. 

42. 1919 - Barnard, E. E., Pop. Astr., v. 27, p. 522. 

43. 1919 - Sanford, R., Pop. Astr., v. 27, p. 99. 

44. 1919 - Shapley, H., P.A.S.P., v. 31, p. 226. 

45. 1919 - Shapley, H., Mt. W. Cont., no. 154 - Ap.J., v. 49, p. 24. 

46. 1919 - Woods, I. E., H.C., no. 216. 

47. 1919 - Woods, I. E., H.C., no. 217. 



90 Publications of the David Dunlap Observatory 

Bailey, S. I., Pop. Astr., v. 28, p. 518. 

Shapley, H., Mt. W. Cont., no. 175 = Ap.J., v. 51, pp. 49-61. 
Shapley, H. f ML W. Cont., no. 176 = Ap.J., v. 51, p. 140. 
Shapley, H., Mt. W. Cont., no. 190 = Ap.J., v. 52, p. 73. 

Shapley, H. and Ritchie, M., Mt. W. Cont., no. 195 = Ap.J., v. 52,*p. 232. 
Turner, H. H., M.N., v. 80, p. 640. 
Turner, H. H., M.N., v. 81, p. 74. 
Larink, J., A.N., v. 214, p. 71. 
Shapley, H., H.B., no. 761. 

Shapley, H. and Mayberry, B. W., P.N.A.S., v. 7, p. 152. 
Baade, W., Ham. Mitt., v. 5, no. 16. 
Bailey, S. I., H.C., no. 234. 
Barnard, E. E., Pop. Astr., v. 30, p. 548. 
Graff, K., A.N., v. 217, p. 310. 
Larink, J., Berg. Abh., v. 2, no. 6. 
Shapley, H., H.C., no. 237. 
Shapley, H., H.B., no. 764; A.N., v. 215, p. 391. 
Woods, I. E., H.B., no. 773. 
Bailey, S. I., H.B., no. 792. 
Bailey, S. I., H.B., no. 796. 
Innes, R. T. A., U.C., no. 59, p. 201. 
Shapley, H., H.B., no. 783. 
Shapley, H., H.B., no. 781. 
Bailey, S. I., H.B., no. 798. 
Bailey, S. I., H.B., no. 799. 
Bailey, S. I., H.B., no. 801. 
Bailey, S. I., H.B., no. 802. 
Bailey, S. I., H.B., no. 803. 
Bailey, S. I., H.C., no. 266. 
Bailey, S. I., H.B., no. 813. 

Guthnick, P. and Prager, R., Site. Preuss. Akad. Wiss., v. 27, p. 508. 
ParaskeVopoulos, J. S., H.B., no. 813. 
Baade, W., Ham. Mitt., v. 6, no. 27, p. 61. 
Baade, W., Ham. Mitt., v. 6, no. 27, p. 66. 
Baade, W., Ham. Mitt., v. 6, no. 27, p. 67. 
Schilt, J., Ap.J., v. 65, p. 124 = Mt. W. Cont., no. 330. 
Shapley, H., H.B., no. 848. 
Shapley, H., H.B., no. 851. 

Baade, W., Ham. Mitt., v. 6, no. 29, p. 92; A.N., v. 232, p. 193. 
Baade, W., A.N., v. 232, pp. 65-70. 
Slavenas, P.,A.N.,v. 240, p. 169. 
Baade, W., A.N., v. 239, p. 353. 
Rybka, E., B.A.N., v. 5, pp. 257-70. 
Shapley, H., Star Clusters, pp. 45-46. 
Shapley, H., Star Clusters, p. 51. 
Baade, W., A.N., v. 244, p. 153. 

Sawyer, H. B., H.C., no. 366; Pub. A.A.S., v. 7, p. 35. 
van Gent, H., B.A.N. , v. 6, p. 163. 
Grosse, E., A.N., v. 246, p. 377. 

Hogg, F. S. and Sawyer, H. B., P.A.S.P., v. 44, p. 258. 
Sawyer, H. B., H.C., no. 374. 
- Wemple, L., H.B., no. 889. 



48. 


1920 - 


49. 


1920 - 


50. 


1920 - 


51. 


1920 - 


52. 


1920 - 


53. 


1920 - 


54. 


1920 - 


55. 


1921 - 


56. 


1921 - 


57. 


1921 - 


58. 


1922 - 


59. 


1922 - 


60. 


1922 - 


60a. 


1922 - 


61. 


1922 - 


62. 


1922 - 


63. 


1922 - 


64. 


1922 - 


65. 


1923 - 


66. 


1923 - 


67. 


1923 - 


68. 


1923 - 


68a. 


1923 - 


69. 


1924 - 


70. 


1924 - 


71. 


1924 - 


72. 


1924 - 


73. 


1924 - 


74. 


1924 - 


75. 


1925 - 


76. 


1925 - 


77. 


1925 - 


78. 


1926 - 


79. 


1926 - 


80. 


1926 - 


80a. 


1927 - 


81. 


1927 - 


82. 


1927 - 


83. 


1928 - 


83a 


. 1928 - 


84. 


1929 - 


85. 


1930 - 


86. 


1930 - 


87. 


1930 - 


88. 


1930 - 


89. 


1931 - 


90. 


1931 - 


91. 


1932 ■ 


92. 


1932 - 


93. 


1932 - 


94. 


1932 ■ 


95. 


1932 ■ 






Variable Stars in Globular Clusters 91 

96. 1933 - van Gent, H., B.A.N. , v. 7, p. 21. 

97. 1933 - Grosse, E., A.N., v. 249, p. 389. 

98. 1933 - Guthnick, P., Sitz. Preuss. Akad. Wiss., v. 24, p. 24. 

99. 1933 - Hertzsprung, E., B.A.N. , v. 7, p. 83. 

100. 1933 - Levy, M., H.B., no. 893. 

101. 1933 - Miiller, Th., Bed. Babels., Veroff., v. 11, p. 1. 

102. 1933 - Sawyer, H. B., Pub. A.A.S., v. 7, p. 185. 

103. 1933 - Shapley, H., Hand. d. Astr. v. V, p. 719. 

104. 1934 - Baade, W., P.A.S.P., v. 46, p. 52. 

105. 1934 - Guthnick, P., Sits. Preuss. Akad. Wiss., v. 25 = Naturwiss., v. 22, p. 319. 

106. 1934 - Sawyer, H. B., Pub. A. A. S., v. 8, p. 20. 

107. 1934 - Sawyer, H. B., Pub.A.A.S., v. 8, p. 149. 

108. 1935 - Baade, W., Mt. W. Cont., no. 529 = Ap.J., v. 82, pp. 396-412. 

109. 1935 - Greenstein, J. L., A.N., v. 257, pp. 301-30. 

110. 1935 - Greenstein, J. L., H.B., no. 901, p. 11. 

111. 1935 - Miczaika, G. R., Pop. Astr., v. 43, p. 260. 

112. 1935 - Sawyer, H. B., Pub. D.A.O., v. 6, no. 14. 

113. 1936 - Shapley, H., Hand d. Astr., v. VII, p. 536. 

114. 1937 - Guthnick, P., Viert. der Astr. Ges., v. 72, p. 160. 

115. 1937 - Joy. A. H., Pub. A.A.S., v. 9, p. 45. 

116. 1937 - Martin, W. Chr., Photographische Photometrie van Veranderlijke Sterren in 

03 Centauri. (Proefschrift) Leiden, Luctor et Emerge 

117. 1937 - Sawyer, H. B., J.R.A.S.C, v. 31, p. 57. 

117a. 1938 - Luyten, W. J., Pub. Obs. Univ. Minn., II, no. 6. 

118. 1938 - Martin, W. Chr., Leiden Ann., v. 17, pt. 2, pp. 1-166. 

119. 1938 - Martin, W. Chr., B.A.N. , v. 8, p. 290. 

120. 1938 - Nassau, J. J., Ap.J., v. 87, p. 361. 

121. 1938 - Oosterhoff, P. Th., B.A.N. , v. 8, p. 273. 

122. 1938 - Sawyer, H. B., D.D.O. Comm., no. 1. 

123. 1938 - Sawyer, H. B., Pub. D.A.O., v. 7, no. 5. 

124. 1938 - Sawyer, H. B., Pub. D.D.O. , v. 1, no. 2. 

125. 1939 - Hachenberg, O., Zeit. f. Astr., v. 18, p. 49. 

126. 1939 - Greenstein, J. L., Ap.J., v. 90, p. 401. 

127. 1940 - Dowse, M., H.B., no. 913. 

128. 1940 - Dodson, H. W., Cornwall, E. R., Thorndike, S. L. Pub. A.A.S., v. 10, p. 48. 

129. 1940 - Hertzsprung, E., B.A.N. , v. 9, p. 117. 

130. 1940 - Joy, A. H., Mt. W. Cont., no. 637; Ap.J., v. 92, p. 396. 

131. 1940 - Martin, W. Chr., B.A.N. , v. 9, p. 60. 

132. 1940 - Oosterhoff, P. Th., B.A.N. , v. 9, p. 57. 

133. 1940 - Sawyer, H. B., Pub. A.A.S., v. 10, p. 66. 

134. 1940 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 5. 

135. 1940 - Schwarzschild, M., H.C., no. 437. 

136. 1940 - Wright, F. W., H.B., no. 912. 

137. 1941 - Oosterhoff, P. Th., Leiden Ann., v. 17, pt. 4, pp. 1-48. 

138. 1941 - de Sitter, A., Natuur. Tijds. Ned. Indie., dl. 101, afl. 2, pp. 51-3. 

139. 1941 - Shapley, H., P.N.A.S., v. 27, pp. 440-45; Harv. Repr., no. 228. 

140. 1941 - Wright, F. W., H.B., no. 915. 

141. 1942 - Hett, J. H., A.J., v. 50, pp. 77-91. 

142. 1942 - Kollnig-Schattschneider, E., Konigstuhl-Heidel. Veroff., Bd. 15, no. 2; A.N., 

v. 273, Heft. 3. 

143. 1942 - Kooreman, C. J., B.A.N. , v. 9, pp. 271-3. 

144. 1942 • Martin, W. Chr., Ap.J., v. 95, pp. 314-8. 



92 Publications of the David Dunlap Observatory 

145. 1942 - Sawyer, H. B., J.R.A.S.C, v. 36, p. 213; Comm. D.D.O., no. 8. 

146. 1942 - Sawyer, H. B., Pub. A.A.S., v. 10, p. 233. 

147. 1942 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 11. 

148. 1942 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 12. 

149. 1942 - Wright, F. W., H.B., no. 916. 

150. 1943 - Oosterhoff, P. Th., B.A.N. , v. 9, pp. 397-9. 

151. 1943 - Oosterhoff, P. Th., B.A.N. , v. 9, p. 411. 

152. 1943 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 14; Pub. A.A.S., v. 10, p. 334 (Abs.). 

153. 1944 - Oosterhoff, P. Th., B.A.N. , v. 10, pp. 55-58. 

154. 1944 - Rosino, L., Pub. Oss. Bologna, v. IV, no. 7. 

155. 1944 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 15. 

156. 1945 - Baade, W., ML W. ConL, no. 706; Ap.J., v. 102, pp. 17-25. 

157. 1945 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 17. 

158. 1946 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 18. 

159. 1947 ■ Greenstein, J. L., Bidelman, W. P., and Popper, D. M., P.A.S.P., v. 59, p. 143. 

160. 1947 - van den Hoven van Genderen, E., B.A.N., v. 10, pp. 241-8. 

161. 1947 - de Sitter, A.; Oosterhoff, P. Th., B.A.N. , v. 10, pp. 287-303. 

162. 1948 - van Gent, H. and Oosterhoff, P. Th., B.A.N., v. 10, pp. 377-82. 

163. 1948 - Sawyer, H. B., A. J., v. 53, p. 203. 

164. 1949 - Gaposchkin, S., A. J., v. 54, p. 185. 

165. 1949 - Joy, A. H., Ap.J., v. 110, pp. 105-16; ML W. and Pal. Repr. no. 5; A.J., v. 53, 

p. 113 (1948). 

166. 1949 - Mayall, M. W., A. J., v. 54, p. 191. 

167. 1949 - Rosino, L., Pub. Oss. Bologna, v. V., no. 9. 

168. 1949 - Rosino, L., Pub. Oss. Bologna, v. V., no. 10. 

169. 1949 - Sawyer, H. B., J.R.A.S.C, v. 43, pp. 38-44; Comm. D.D.O., no. 18. 

170. 1949 - Sawyer, H. B., A.J., v. 54, p. 193. 

171. 1950 - Rosino, L., Pub. Oss. Bologna, v. V., no. 12. 

172. 1950 - Rosino, L., Ap. J., v. 112, p. 221. 

173. 1950 - Thackeray, A. D., M.N., v. 110, pp. 45-48; Comm. Radcliffe Obs., no. 15. 

174. 1951 - King, I., H.B., no. 920. 

175. 1951 - McKibben-Nail, V., H.B., no. 920. 

176. 1951 - Rosino, L., Pub. Oss. Bologna, v. V., no. 15. 

177. 1951 - Sawyer, H. B., Pub. D.D.O., v. 1, no. 24. 

178. 1951 - Thackeray, A. D., M.N., v. Ill, p. 206. 

179. 1952 - Belserene, E.P.,4./.,v. 57, pp. 237-47. 

180. 1952 - Rosino, L., Pub. Oss. Bologna, v.V., no. 18. 

181. 1952 - Rosino, L., Pub. Oss. Bologna, v.V., no. 20. 

182. 1952 - Sawyer, H. B., A. J., v. 57, p. 26. 

183. 1952 - Swope, H. H., Greenbaum, I., A.J., v. 57, pp. 83-91. 

184. 1953 - Arp, H. C, Baum, W. A., Sandage, A. R., A.J., v. 58, pp. 4-10. 

185. 1953 - Rosino, L., Pub. Oss. Bologna, v. VI., no. 2. 

186. 1953 - Rosino, L., Pietra, S., Mem. Soc. Astr. Ital., v. 24, no. 4. 

187. 1953 - Sawyer, H. B., J.R.A.S.C, v. 47, pp. 229-236; Comm. D.D.O., no. 34. 

Unpublished References, 1939 

A. Baade, W., Letter summarizing Mt. Wilson observations. 

B. Greenstein, J. L., Letter. 

C. Nassau, J. J., Letter. 

D. Oosterhoff, P. Th. L., Letter giving Leiden data. 

E. Sawyer, H. B., Unpublished observations. 

F. Shapley, H., Letter summarizing Harvard data. 

G. Hubble, E. P., Conversation with author. 



Variable Stars in Globular Clusters 93 

Correspondence of Recent Years Pertaining to this Catalogue 

H. Arp, H. 

I. Baade, W. 

J. McKibben-Nail, V. 

K. Oosterhoff, P. Th. 

L. Rosino, L. 

M. Sandage, A. R. 

N. Shapley, H. 

O. Swope, H. H. 

P. Thackeray, A. D. 

Q. Wright, F. W. 

R. Unpublished material in files of writer, H. B. Sawyer. 






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